The Northrop Grumman Pegasus XL rocket containing NASA's Ionospheric Connection Explorer (ICON) is seen outside the cleanroom after assembly at Vandenberg Air Force Base in California on Sept 19, 2019. ICON launched on the Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, on Oct. 10, 2019, after takeoff from the Skid Strip at Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The wing for the Orbital ATK Pegasus XL rocket was offloaded from a truck and transporter to Building 1555 at Vandenberg Air Force Base in California. The rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Workers unload the wing for the Orbital ATK Pegasus XL rocket from a truck at Building 1555 at Vandenberg Air Force Base in California. The rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Workers transfer the wing for the Orbital ATK Pegasus XL rocket from a truck to a forklift at Building 1555 at Vandenberg Air Force Base in California. The rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The wing for the Orbital ATK Pegasus XL rocket arrives by truck at Building 1555 at Vandenberg Air Force Base in California. The Pegasus rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Technicians install the solar array for NASA's Ionospheric Connection Explorer (ICON) inside Building 1555 at Vandenberg Air Force Base in California on Aug. 28, 2019. ICON launched on a Northrop Grumman Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, on Oct. 10, 2019, after takeoff from the Skid Strip at Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

NASA's Ionospheric Connection Explorer (ICON) is ready for solar array installation inside Building 1555 at Vandenberg Air Force Base in California on Aug. 28, 2019. ICON launched on a Northrop Grumman Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, on Oct. 10, 2019, after takeoff from the Skid Strip at Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Technicians install the solar array for NASA's Ionospheric Connection Explorer (ICON) inside Building 1555 at Vandenberg Air Force Base in California on Aug. 28, 2019. ICON launched on a Northrop Grumman Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, on Oct. 10, 2019, after takeoff from the Skid Strip at Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Northrop Grumman's L-1011 Stargazer takes off from Vandenberg Air Force Base in California on Oct. 1, 2019. The company's Pegasus XL rocket, containing NASA's Ionospheric Connection Explorer (ICON), is attached beneath the aircraft. The explorer is targeted to launch on Oct. 9, 2019, from Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Northrop Grumman's L-1011 Stargazer takes off from Vandenberg Air Force Base in California on Oct. 1, 2019. The company's Pegasus XL rocket, containing NASA's Ionospheric Connection Explorer (ICON), is attached beneath the aircraft. The explorer is targeted to launch on Oct. 9, 2019, from Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Northrop Grumman's L-1011 Stargazer takes off from Vandenberg Air Force Base in California on Oct. 1, 2019. The company's Pegasus XL rocket, containing NASA's Ionospheric Connection Explorer (ICON), is attached beneath the aircraft. The explorer is targeted to launch on Oct. 9, 2019, from Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Northrop Grumman's L-1011 Stargazer takes off from Vandenberg Air Force Base in California on Oct. 1, 2019. The company's Pegasus XL rocket, containing NASA's Ionospheric Connection Explorer (ICON), is attached beneath the aircraft. The explorer is targeted to launch on Oct. 9, 2019, from Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Northrop Grumman's L-1011 Stargazer is undergoing final preparations prior to its takeoff from Vandenberg Air Force Base in California on Oct. 1, 2019. The company's Pegasus XL rocket, containing NASA's Ionospheric Connection Explorer (ICON), is attached beneath the aircraft. The explorer is targeted to launch on Oct. 9, 2019, from Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Northrop Grumman's L-1011 Stargazer awaits takeoff from Vandenberg Air Force Base in California on Oct. 1, 2019. The company's Pegasus XL rocket, containing NASA's Ionospheric Connection Explorer (ICON), is attached beneath the aircraft. The explorer is targeted to launch on Oct. 9, 2019, from Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

The starboard side of the Northrop Grumman Pegasus XL rocket’s payload fairing has been installed around NASA's Ionospheric Connection Explorer (ICON) inside Building 1555 at Vandenberg Air Force Base in California on Sept. 17, 2019. ICON launched on the Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, on Oct. 10, 2019, after takeoff from the Skid Strip at Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Technicians prepare to install the solar array for NASA's Ionospheric Connection Explorer (ICON) inside Building 1555 at Vandenberg Air Force Base in California on Aug. 28, 2019. ICON launched on a Northrop Grumman Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, on Oct. 10, 2019, after takeoff from the Skid Strip at Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Technicians prepare to install the starboard side of the Northrop Grumman Pegasus XL rocket’s payload fairing around NASA's Ionospheric Connection Explorer (ICON) inside Building 1555 at Vandenberg Air Force Base in California on Sept. 17, 2019. ICON launched on the Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, on Oct. 10, 2019, after takeoff from the Skid Strip at Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Technicians install the starboard side of the Northrop Grumman Pegasus XL rocket’s payload fairing around NASA's Ionospheric Connection Explorer (ICON) inside Building 1555 at Vandenberg Air Force Base in California on Sept. 17, 2019. ICON launched on the Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, on Oct. 10, 2019, after takeoff from the Skid Strip at Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Technicians install the starboard side of the Northrop Grumman Pegasus XL rocket’s payload fairing around NASA's Ionospheric Connection Explorer (ICON) inside Building 1555 at Vandenberg Air Force Base in California on Sept. 17, 2019. ICON launched on the Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, on Oct. 10, 2019, after takeoff from the Skid Strip at Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Technicians pose for a photo after the starboard side of the Northrop Grumman Pegasus XL rocket’s payload fairing was installed around NASA's Ionospheric Connection Explorer (ICON) inside Building 1555 at Vandenberg Air Force Base in California on Sept. 17, 2019. ICON launched on the Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, on Oct. 10, 2019, after takeoff from the Skid Strip at Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Technicians prepare to install the solar array for NASA's Ionospheric Connection Explorer (ICON) inside Building 1555 at Vandenberg Air Force Base in California on Aug. 28, 2019. ICON launched on a Northrop Grumman Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, on Oct. 10, 2019, after takeoff from the Skid Strip at Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The starboard side of the Northrop Grumman Pegasus XL rocket’s payload fairing is ready for installation around NASA's Ionospheric Connection Explorer (ICON) inside Building 1555 at Vandenberg Air Force Base in California on Sept. 17, 2019. ICON launched on the Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, on Oct. 10, 2019, after takeoff from the Skid Strip at Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Members of the launch team for NASA’s Ionospheric Connection Explorer (ICON) gather for a joyous group photo in front of the Northrop Grumman L-1011 Stargazer aircraft carrying the Pegasus XL rocket at the Skid Strip at Florida’s Cape Canaveral Air Force Station, Nov. 10, 2019. Hours later, the rocket containing ICON air-launched from beneath the aircraft off the coast of Daytona Beach. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Backdropped by a twilight sky, Northrop Grumman's L-1011 Stargazer undergoes final preparations prior to its takeoff from Vandenberg Air Force Base in California on Oct. 1, 2019. The company's Pegasus XL rocket, containing NASA's Ionospheric Connection Explorer (ICON), is attached beneath the aircraft. The explorer is targeted to launch on Oct. 9, 2019, from Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Northrop Grumman's L-1011 Stargazer takes off from Vandenberg Air Force Base in California on Oct. 1, 2019. The company's Pegasus XL rocket, containing NASA's Ionospheric Connection Explorer (ICON), is attached beneath the aircraft. The explorer is targeted to launch on Oct. 9, 2019, from Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Northrop Grumman's L-1011 Stargazer takes off from Vandenberg Air Force Base in California on Oct. 1, 2019. The company's Pegasus XL rocket, containing NASA's Ionospheric Connection Explorer (ICON), is attached beneath the aircraft. The explorer is targeted to launch on Oct. 9, 2019, from Cape Canaveral Air Force Station in Florida. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

The first stage motor for the Orbital ATK Pegasus XL rocket arrives by truck at Building 1555 at Vandenberg Air Force Base in California. The Pegasus rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The first stage motor for the Orbital ATK Pegasus XL rocket was moved inside Building 1555 at Vandenberg Air Force Base in California. In the background are the second and third stage segments. The rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The second and third stages of the Orbital ATK Pegasus XL rocket are offloaded from a transport vehicle at Building 1555 at Vandenberg Air Force Base in California. The rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Workers prepare to offload the second and third stages of the Orbital ATK Pegasus XL rocket from a transport vehicle at Building 1555 at Vandenberg Air Force Base in California. The rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The first stage motor for the Orbital ATK Pegasus XL rocket was moved inside Building 1555 at Vandenberg Air Force Base in California. In the background are the second and third stage segments. The rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The first stage motor for the Orbital ATK Pegasus XL rocket is moved into Building 1555 at Vandenberg Air Force Base in California. The rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The first stage motor for the Orbital ATK Pegasus XL rocket is offloaded from a truck at Building 1555 at Vandenberg Air Force Base in California. The Pegasus rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The first stage motor for the Orbital ATK Pegasus XL rocket is moved inside Building 1555 at Vandenberg Air Force Base in California. In the background are the second and third stage segments. The rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The first stage motor for the Orbital ATK Pegasus XL rocket is offloaded from a truck at Building 1555 at Vandenberg Air Force Base in California. The Pegasus rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The first stage motor for the Orbital ATK Pegasus XL rocket was moved inside Building 1555 at Vandenberg Air Force Base in California. In the background are the second and third stage segments. The rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The first stage motor for the Orbital ATK Pegasus XL rocket is moved inside Building 1555 at Vandenberg Air Force Base in California. In the background are the second and third stage segments. The rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The third stage of the Orbital ATK Pegasus XL rocket is offloaded from a transport vehicle at Building 1555 at Vandenberg Air Force Base in California. The rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The third stage of the Orbital ATK Pegasus XL rocket is offloaded from a transport vehicle at Building 1555 at Vandenberg Air Force Base in California. The rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The second and third stages of the Orbital ATK Pegasus XL rocket are offloaded from a transport vehicle at Building 1555 at Vandenberg Air Force Base in California. The rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The first stage motor for the Orbital ATK Pegasus XL rocket was moved inside Building 1555 at Vandenberg Air Force Base in California. In the background are the second and third stage segments. The rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

The second and third stages of the Orbital ATK Pegasus XL rocket are offloaded from a transport vehicle at Building 1555 at Vandenberg Air Force Base in California. The rocket is being prepared for NASA's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Albert Sierra (right), chief of NASA’s Launch Services Program’s (LSP) Flight Projects Office, and Garrett Lee Skrobot (second from right), senior mission manager, monitor the launch of the agency’s Ionospheric Connection Explorer (ICON) inside Hangar AE’s Mission Director’s Center at Cape Canaveral Air Force Station (CCAFS). The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach, Florida, following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The ICON launch was managed by LSP.

Inside Hangar AE’s Mission Director’s Center at Cape Canaveral Air Force Station (CCAFS), Amanda Mitskevich, right, program manager in NASA’s Launch Services Program (LSP), and Chuck Dovale, second from right, LSP deputy program manager, monitor the launch of the agency’s Ionospheric Connection Explorer (ICON). The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach, Florida, following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The ICON launch was managed by LSP.

Omar Baez, right, launch director in NASA’s Launch Services Program (LSP), monitors the launch of the agency’s Ionospheric Connection Explorer (ICON) satellite inside Hangar AE’s Mission Director’s Center at Cape Canaveral Air Force Station (CCAFS). The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach, Florida, following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The ICON launch was managed by LSP.

From left, Kennedy Space Center Director Bob Cabana, NASA’s Launch Services Program (LSP) Deputy Program Manager Chuck Dovale and LSP Program Manager Amanda Mitskevich monitor the launch of the agency’s Ionospheric Connection Explorer (ICON) satellite inside Hangar AE’s Mission Director’s Center at Cape Canaveral Air Force Station (CCAFS). The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach, Florida, following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The ICON launch was managed by LSP.

From left, Kennedy Space Center Director Bob Cabana, NASA’s Launch Services Program (LSP) Deputy Program Manager Chuck Dovale and LSP Program Manager Amanda Mitskevich monitor the launch of the agency’s Ionospheric Connection Explorer (ICON) satellite inside Hangar AE’s Mission Director’s Center at Cape Canaveral Air Force Station (CCAFS). The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach, Florida, following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The ICON launch was managed by LSP.

Members of the launch team monitor the launch of NASA’s Ionospheric Connection Explorer (ICON) satellite inside Hangar AE at Cape Canaveral Air Force Station (CCAFS) in Florida. The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The launch was managed by the agency’s Launch Services Program.

Members of the launch team monitor the launch of NASA’s Ionospheric Connection Explorer (ICON) satellite inside Hangar AE at Cape Canaveral Air Force Station (CCAFS) in Florida. The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The launch was managed by the agency’s Launch Services Program.

A member of the launch team monitors the launch of NASA’s Ionospheric Connection Explorer (ICON) satellite inside Hangar AE at Cape Canaveral Air Force Station (CCAFS) in Florida. The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The launch was managed by the agency’s Launch Services Program.

Members of the launch team monitor the launch of NASA’s Ionospheric Connection Explorer (ICON) satellite inside Hangar AE at Cape Canaveral Air Force Station (CCAFS) in Florida. The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The launch was managed by the agency’s Launch Services Program.

Members of the launch team monitor the launch of NASA’s Ionospheric Connection Explorer (ICON) satellite inside Hangar AE at Cape Canaveral Air Force Station (CCAFS) in Florida. The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The launch was managed by the agency’s Launch Services Program.

Members of the launch team monitor the launch of NASA’s Ionospheric Connection Explorer (ICON) satellite inside Hangar AE at Cape Canaveral Air Force Station (CCAFS) in Florida. The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The launch was managed by the agency’s Launch Services Program.

Members of the launch team monitor the launch of NASA’s Ionospheric Connection Explorer (ICON) satellite inside Hangar AE at Cape Canaveral Air Force Station (CCAFS) in Florida. The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The launch was managed by the agency’s Launch Services Program.

Members of the launch team monitor the launch of NASA’s Ionospheric Connection Explorer (ICON) satellite inside Hangar AE at Cape Canaveral Air Force Station (CCAFS) in Florida. The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The launch was managed by the agency’s Launch Services Program.

Members of the launch team monitor the launch of NASA’s Ionospheric Connection Explorer (ICON) satellite inside Hangar AE at Cape Canaveral Air Force Station (CCAFS) in Florida. The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The launch was managed by the agency’s Launch Services Program.

Members of the launch team monitor the launch of NASA’s Ionospheric Connection Explorer (ICON) satellite inside Hangar AE at Cape Canaveral Air Force Station (CCAFS) in Florida. The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The launch was managed by the agency’s Launch Services Program.

Inside Hangar AE at Cape Canaveral Air Force Station (CCAFS), members of the launch team applaud the successful launch of NASA’s Ionospheric Connection Explorer (ICON) satellite on Oct. 10, 2019. The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT over the Atlantic Ocean about 50 miles from Daytona Beach, Florida, following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The launch was managed by the agency’s Launch Services Program.

Members of the launch team monitor the launch of NASA’s Ionospheric Connection Explorer (ICON) satellite inside Hangar AE at Cape Canaveral Air Force Station (CCAFS) in Florida. The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The launch was managed by the agency’s Launch Services Program.

Managers of NASA's Launch Services Program (LSP) at Kennedy Space Center visit the processing facility for the Pegasus XL rocket at Vandenberg Air Force Base in California. From left, are Chuck Dovale, deputy manager; Amanda Mitskevich, manager; Eric Denbrook, launch vehicle processing at VAFB; and Tim Dunn, NASA assistant launch manager for ICON. The Pegasus XL rocket is being prepared for the agency's Ionospheric Connection Explorer, or ICON, mission. ICON will launch from the Kwajalein Atoll aboard the Pegasus XL on Dec. 8, 2017. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Inside Hangar AE’s Mission Director’s Center at Cape Canaveral Air Force Station (CCAFS), Nicola Fox, left, Heliophysics division director in NASA’s Science Mission Directorate, monitors the launch of the agency’s Ionospheric Connection Explorer (ICON) satellite. The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach, Florida, following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The launch was managed by the agency’s Launch Services Program.

Inside Hangar AE’s Mission Director’s Center at Cape Canaveral Air Force Station (CCAFS), Kennedy Space Center Director Bob Cabana monitors the launch of NASA’s Ionospheric Connection Explorer (ICON) satellite. The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach, Florida, following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The launch was managed by the agency’s Launch Services Program.

Inside Hangar AE’s Mission Director’s Center at Cape Canaveral Air Force Station (CCAFS), members of the launch team monitor the launch of NASA’s Ionospheric Connection Explorer (ICON) satellite. The Northrop Grumman Pegasus XL rocket carrying ICON was released from the company’s L-1011 Stargazer aircraft at 9:59 p.m. EDT on Oct. 10, 2019, over the Atlantic Ocean about 50 miles from Daytona Beach, Florida, following takeoff from CCAFS. ICON will spend two years studying the Earth’s ionosphere – the dynamic zone in our atmosphere where terrestrial weather from below meets space weather from above. The launch was managed by the agency’s Launch Services Program.

Northrop Grumman’s L-1011 Stargazer aircraft, with the company’s Pegasus XL rocket attached beneath, takes off from the Skid Strip runway at Cape Canaveral Air Force Station in Florida on Oct. 10, 2019. NASA's Ionospheric Connection Explorer (ICON) is secured inside the rocket's payload fairing. The air-launched Pegasus XL was released from the aircraft at 9:59 p.m. EDT to start ICON’s journey to space. The explorer will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Northrop Grumman’s L-1011 Stargazer aircraft, with the company’s Pegasus XL rocket attached beneath, takes off from the Skid Strip runway at Cape Canaveral Air Force Station in Florida on Oct. 10, 2019. NASA's Ionospheric Connection Explorer (ICON) is secured inside the rocket's payload fairing. The air-launched Pegasus XL was released from the aircraft at 9:59 p.m. EDT to start ICON’s journey to space. The explorer will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Northrop Grumman's L-1011 Stargazer aircraft has arrived at the Skid Strip at Cape Canaveral Air Force Station in Florida on Oct. 1, 2019. The company's Pegasus XL rocket, containing NASA's Ionospheric Connection Explorer (ICON), is attached beneath the aircraft. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

The Northrop Grumman Pegasus XL rocket, carrying NASA’s Ionospheric Connection Explorer (ICON), has arrived at the Skid Strip at Cape Canaveral Air Force Station in Florida on Oct. 1, 2019. The rocket is attached beneath the company’s L-1011 Stargazer aircraft. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Northrop Grumman's L-1011 Stargazer aircraft descends toward the Skid Strip at Cape Canaveral Air Force Station in Florida on Oct. 1, 2019. The company's Pegasus XL rocket, containing NASA's Ionospheric Connection Explorer (ICON), is attached beneath the aircraft. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

The Northrop Grumman Pegasus XL rocket, carrying NASA’s Ionospheric Connection Explorer (ICON), has arrived at the Skid Strip at Cape Canaveral Air Force Station in Florida on Oct. 1, 2019. The rocket is attached beneath the company’s L-1011 Stargazer aircraft. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

The Northrop Grumman Pegasus XL rocket, carrying NASA’s Ionospheric Connection Explorer (ICON), has arrived at the Skid Strip at Cape Canaveral Air Force Station in Florida on Oct. 1, 2019. The rocket is attached beneath the company’s L-1011 Stargazer aircraft. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Northrop Grumman's L-1011 Stargazer aircraft has arrived at the Skid Strip at Cape Canaveral Air Force Station in Florida on Oct. 1, 2019. The company's Pegasus XL rocket, containing NASA's Ionospheric Connection Explorer (ICON), is attached beneath the aircraft. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Northrop Grumman's L-1011 Stargazer aircraft has arrived at the Skid Strip at Cape Canaveral Air Force Station in Florida on Oct. 1, 2019. The company's Pegasus XL rocket, containing NASA's Ionospheric Connection Explorer (ICON), is attached beneath the aircraft. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

The Northrop Grumman Pegasus XL rocket, carrying NASA’s Ionospheric Connection Explorer (ICON), has arrived at the Skid Strip at Cape Canaveral Air Force Station in Florida on Oct. 1, 2019. The rocket is attached beneath the company’s L-1011 Stargazer aircraft. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Northrop Grumman's L-1011 Stargazer aircraft descends toward the Skid Strip at Cape Canaveral Air Force Station in Florida on Oct. 1, 2019. The company's Pegasus XL rocket, containing NASA's Ionospheric Connection Explorer (ICON), is attached beneath the aircraft. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Thomas Immel of the Space Sciences Laboratory at the University of California Berkeley speaks to news media during a prelaunch mission briefing for NASA’s Ionospheric Connection Explorer (ICON), on Oct. 8, 2019, in the News Center auditorium at the agency’s Kennedy Space Center in Florida. Immel is ICON’s principal investigator. ICON is targeted to launch from Cape Canaveral Air Force Station in Florida on Oct. 9, 2019, aboard a Northrop Grumman Pegasus XL rocket carried aloft by the company’s Stargazer L-1011 aircraft. The explorer will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Launch and mission managers for NASA’s Ionospheric Connection Explorer (ICON) participate in a prelaunch mission briefing on Oct. 8, 2019, in the News Center auditorium at the agency’s Kennedy Space Center in Florida. From left to right are Karen Fox, NASA Communications; Nicola Fox, Heliophysics division director in NASA’s Science Mission Directorate; Thomas Immel, ICON principal investigator at the Space Sciences Laboratory at the University of California Berkeley; and Steve Krein, vice president of civil and commercial space for Northrop Grumman Innovation Systems. ICON is targeted to launch from Cape Canaveral Air Force Station in Florida on Oct. 9, 2019, aboard a Northrop Grumman Pegasus XL rocket carried aloft by the company’s Stargazer L-1011 aircraft. The explorer will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Launch and mission managers for NASA’s Ionospheric Connection Explorer (ICON) participate in a prelaunch mission briefing on Oct. 8, 2019, in the News Center auditorium at the agency’s Kennedy Space Center in Florida. From left to right are Karen Fox, NASA Communications; Nicola Fox, Heliophysics division director in NASA’s Science Mission Directorate; Thomas Immel, ICON principal investigator at the Space Sciences Laboratory at the University of California Berkeley; and Steve Krein, vice president of civil and commercial space for Northrop Grumman Innovation Systems. ICON is targeted to launch from Cape Canaveral Air Force Station in Florida on Oct. 9, 2019, aboard a Northrop Grumman Pegasus XL rocket carried aloft by the company’s Stargazer L-1011 aircraft. The explorer will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Technicians attach NASA's Ionospheric Connection Explorer (ICON) to the Northrop Grumman Pegasus XL rocket inside Building 1555 at Vandenberg Air Force Base in California on Sept. 10, 2019. Preparations are underway to perform a black light test on Pegasus before the port and starboard payload fairings are installed around ICON. The Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, will launch ICON from the Skid Strip at Cape Canaveral Air Force Station in Florida. Launch is scheduled for Oct. 9, 2019. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology and communications systems.

Technicians perform a black light inspection of the Northrop Grumman Pegasus XL rocket inside Building 1555 at Vandenberg Air Force Base in California, on Sept. 10, 2019, after NASA’s Ionospheric Connection Explorer (ICON) was attached to the rocket. The Pegasus port and starboard payload fairings will be installed around ICON. The Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, will launch ICON from the Skid Strip at Cape Canaveral Air Force Station in Florida. Launch is scheduled for Oct. 9, 2019. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology and communications systems.

Technicians perform a black light inspection of the Northrop Grumman Pegasus XL rocket inside Building 1555 at Vandenberg Air Force Base in California, on Sept. 10, 2019, after NASA’s Ionospheric Connection Explorer (ICON) was attached to the rocket. The Pegasus port and starboard payload fairings will be installed around ICON. The Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, will launch ICON from the Skid Strip at Cape Canaveral Air Force Station in Florida. Launch is scheduled for Oct. 9, 2019. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology and communications systems.

NASA's Ionospheric Connection Explorer (ICON) is attached to the Northrop Grumman Pegasus XL rocket inside Building 1555 at Vandenberg Air Force Base in California on Sept. 10, 2019. Preparations are underway to perform a black light test on Pegasus before the port and starboard payload fairings are installed around ICON. The Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, will launch ICON from the Skid Strip at Cape Canaveral Air Force Station in Florida. Launch is scheduled for Oct. 9, 2019. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology and communications systems.

NASA's Ionospheric Connection Explorer (ICON) is attached to the Northrop Grumman Pegasus XL rocket inside Building 1555 at Vandenberg Air Force Base in California on Sept. 10, 2019. The Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, will launch ICON from the Skid Strip at Cape Canaveral Air Force Station in Florida. Launch is scheduled for Oct. 9, 2019. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology and communications systems.

A stereographic view of NASA's Ionospheric Connection Explorer (ICON) in a clean room at Vandenberg Air Force Base in California, on Aug. 16, 2018. ICON will launch on a Northrop Grumman Pegasus XL vehicle, attached beneath the company's L-1011 Stargazer aircraft, from the Skid Strip at Cape Canaveral Air Force Station in Florida. Launch is scheduled for Oct. 26. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Technicians attach NASA’s Ionospheric Connection Explorer (ICON) to the Northrop Grumman Pegasus XL rocket inside Building 1555 at Vandenberg Air Force Base in California, on Sept. 10, 2019. The Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, will launch ICON from the Skid Strip at Cape Canaveral Air Force Station in Florida. Launch is scheduled for Oct. 9, 2019. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology and communications systems.

Technicians attach NASA’s Ionospheric Connection Explorer (ICON) to the Northrop Grumman Pegasus XL rocket inside Building 1555 at Vandenberg Air Force Base in California, on Sept. 10, 2019. The Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, will launch ICON from the Skid Strip at Cape Canaveral Air Force Station in Florida. Launch is scheduled for Oct. 9, 2019. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology and communications systems.

NASA's Ionospheric Connection Explorer (ICON) is attached to the Northrop Grumman Pegasus XL rocket inside Building 1555 at Vandenberg Air Force Base in California. Preparations are underway to perform a black light test on Pegasus before the port and starboard payload fairings are installed around ICON on Aug. 22, 2018. The Pegasus XL rocket, attached beneath the company's L-1011 Stargazer aircraft, will launch ICON from the Skid Strip at Cape Canaveral Air Force Station in Florida. Launch is scheduled for Oct. 26. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology and communications systems.

Karen Fox of NASA Communications moderates a prelaunch mission briefing for NASA’s Ionospheric Connection Explorer (ICON), on Oct. 8, 2019, in the News Center auditorium at the agency’s Kennedy Space Center in Florida. ICON is targeted to launch from Cape Canaveral Air Force Station in Florida on Oct. 9, 2019, aboard a Northrop Grumman Pegasus XL rocket carried aloft by the company’s Stargazer L-1011 aircraft. The explorer will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Omar Baez, launch director in NASA’s Launch Services Program, speaks to news media during a prelaunch mission briefing for NASA’s Ionospheric Connection Explorer (ICON), on Oct. 8, 2019, in the News Center auditorium at the agency’s Kennedy Space Center in Florida. At left is Karen Fox of NASA Communications. ICON is targeted to launch from Cape Canaveral Air Force Station in Florida on Oct. 9, 2019, aboard a Northrop Grumman Pegasus XL rocket carried aloft by the company’s Stargazer L-1011 aircraft. The explorer will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Steve Krein, vice president of civil and commercial space for Northrop Grumman Innovation Systems, speaks to news media during a prelaunch mission briefing for NASA’s Ionospheric Connection Explorer (ICON), on Oct. 8, 2019, in the News Center auditorium at the agency’s Kennedy Space Center in Florida. ICON is targeted to launch from Cape Canaveral Air Force Station in Florida on Oct. 9, 2019, aboard a Northrop Grumman Pegasus XL rocket carried aloft by the company’s Stargazer L-1011 aircraft. The explorer will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Don Walters, chief pilot of the L-1011 Stargazer aircraft for Northrop Grumman Innovation Systems, speaks to news media during a prelaunch mission briefing for NASA’s Ionospheric Connection Explorer (ICON), on Oct. 8, 2019, in the News Center auditorium at the agency’s Kennedy Space Center in Florida. ICON is targeted to launch from Cape Canaveral Air Force Station in Florida on Oct. 9, 2019, aboard a Northrop Grumman Pegasus XL rocket carried aloft by the company’s Stargazer L-1011 aircraft. The explorer will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Nicola Fox, Heliophysics division director in NASA’s Science Mission Directorate, speaks to news media during a prelaunch mission briefing for NASA’s Ionospheric Connection Explorer (ICON), on Oct. 8, 2019, in the News Center auditorium at the agency’s Kennedy Space Center in Florida. ICON is targeted to launch from Cape Canaveral Air Force Station in Florida on Oct. 9, 2019, aboard a Northrop Grumman Pegasus XL rocket carried aloft by the company’s Stargazer L-1011 aircraft. The explorer will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Phil Joyce, vice president of space launch programs for Northrop Grumman Innovation Systems, speaks to news media during a prelaunch mission briefing for NASA’s Ionospheric Connection Explorer (ICON), on Oct. 8, 2019, in the News Center auditorium at the agency’s Kennedy Space Center in Florida. ICON is targeted to launch from Cape Canaveral Air Force Station in Florida on Oct. 9, 2019, aboard a Northrop Grumman Pegasus XL rocket carried aloft by the company’s Stargazer L-1011 aircraft. The explorer will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Omar Baez, launch director in NASA’s Launch Services Program, speaks to news media during a prelaunch mission briefing for NASA’s Ionospheric Connection Explorer (ICON), on Oct. 8, 2019, in the News Center auditorium at the agency’s Kennedy Space Center in Florida. ICON is targeted to launch from Cape Canaveral Air Force Station in Florida on Oct. 9, 2019, aboard a Northrop Grumman Pegasus XL rocket carried aloft by the company’s Stargazer L-1011 aircraft. The explorer will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

Will Ulrich, launch weather officer with the U.S. Air Force 45th Space Wing, speaks to news media during a prelaunch mission briefing for NASA’s Ionospheric Connection Explorer (ICON), on Oct. 8, 2019, in the News Center auditorium at the agency’s Kennedy Space Center in Florida. ICON is targeted to launch from Cape Canaveral Air Force Station in Florida on Oct. 9, 2019, aboard a Northrop Grumman Pegasus XL rocket carried aloft by the company’s Stargazer L-1011 aircraft. The explorer will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above.

The Northrop Grumman Pegasus XL rocket, with NASA's Ionospheric Connection Explorer (ICON) secured in its payload fairing, begins rollout from Building 1555 at Vandenberg Air Force Base in California on Sept. 25, 2019. The Pegasus XL rocket will be attached beneath the company's L-1011 Stargazer aircraft for the flight to Cape Canaveral Air Force Station (CCAFS) in Florida. ICON will launch from the Skid Strip at CCAFS. Launch is scheduled for Oct. 10, 2019. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology and communications systems.

The Northrop Grumman Pegasus XL rocket, with NASA's Ionospheric Connection Explorer (ICON) secured in its payload fairing, rolls out to the runway at Vandenberg Air Force Base in California on Sept. 25, 2019. The Pegasus XL rocket will be attached beneath the company's L-1011 Stargazer aircraft for the flight to Cape Canaveral Air Force Station (CCAFS) in Florida. ICON will launch from the Skid Strip at CCAFS. Launch is scheduled for Oct. 10, 2019. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology and communications systems.

The Northrop Grumman Pegasus XL rocket, with NASA's Ionospheric Connection Explorer (ICON) secured in its payload fairing, begins rollout from Building 1555 at Vandenberg Air Force Base in California on Sept. 25, 2019. The Pegasus XL rocket will be attached beneath the company's L-1011 Stargazer aircraft for the flight to Cape Canaveral Air Force Station (CCAFS) in Florida. ICON will launch from the Skid Strip at CCAFS. Launch is scheduled for Oct. 10, 2019. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology and communications systems.

The Northrop Grumman Pegasus XL rocket, with NASA's Ionospheric Connection Explorer (ICON) secured in its payload fairing, rolls out to the runway at Vandenberg Air Force Base in California on Sept. 25, 2019. The Pegasus XL rocket will be attached beneath the company's L-1011 Stargazer aircraft for the flight to Cape Canaveral Air Force Station (CCAFS) in Florida. ICON will launch from the Skid Strip at CCAFS. Launch is scheduled for Oct. 10, 2019. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology and communications systems.

The Northrop Grumman Pegasus XL rocket, with NASA's Ionospheric Connection Explorer (ICON) secured in its payload fairing, rolls out from Building 1555 to the runway at Vandenberg Air Force Base in California on Sept. 25, 2019. The Pegasus XL rocket will be attached beneath the company's L-1011 Stargazer aircraft for the flight to Cape Canaveral Air Force Station (CCAFS) in Florida. ICON will launch from the Skid Strip at CCAFS in Florida. Launch is scheduled for Oct. 10, 2019. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology and communications systems.

Inside a clean room in Building 1555 at Vandenberg Air Force Base in California, technicians complete installation of the second half of the Northrop Grumman Pegasus XL payload fairing around NASA's Ionospheric Connection Explorer (ICON) on Oct. 4, 2018. ICON is being prepared for its launch on the Pegasus XL, which is attached to the company's L-1011 Stargazer aircraft, from the Skid Strip at Cape Canaveral Air Force Station in Florida. Launch is scheduled for Oct. 26. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.