An Orbital Sciences Corporation Antares rocket is seen on launch Pad-0A during sunrise at NASA's Wallops Flight Facility, Wednesday, January 8, 2014, Wallops Island, VA. Early this morning, Orbital Sciences Corp. decided to scrub today’s launch attempt of the Antares rocket and the Cygnus cargo spacecraft on the company’s first resupply mission to the International Space Station due to an unusually high level of space radiation that exceeded constraints imposed on Antares. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen on launch Pad-0A at NASA's Wallops Flight Facility, Monday, January 6, 2014 in advance of a planned Wednesday, Jan. 8th, 1:32 p.m. EST launch, Wallops Island, VA. The Antares will launch a Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Among the cargo aboard Cygnus set to launch to the space station are science experiments, crew provisions, spare parts and other hardware. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen on launch Pad-0A at NASA's Wallops Flight Facility, Monday, January 6, 2014 in advance of a planned Wednesday, Jan. 8th, 1:32 p.m. EST launch, Wallops Island, VA. The Antares will launch a Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Among the cargo aboard Cygnus set to launch to the space station are science experiments, crew provisions, spare parts and other hardware. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen on launch Pad-0A at NASA's Wallops Flight Facility, Tuesday, January 7, 2014 in advance of a planned Wednesday, Jan. 8th, 1:32 p.m. EST launch, Wallops Island, VA. The Antares will launch a Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Among the cargo aboard Cygnus set to launch to the space station are science experiments, crew provisions, spare parts and other hardware. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen on launch Pad-0A at NASA's Wallops Flight Facility, Tuesday, January 7, 2014 in advance of a planned Wednesday, Jan. 8th, 1:32 p.m. EST launch, Wallops Island, VA. The Antares will launch a Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Among the cargo aboard Cygnus set to launch to the space station are science experiments, crew provisions, spare parts and other hardware. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen on launch Pad-0A during sunrise at NASA's Wallops Flight Facility, Wednesday, January 8, 2014, Wallops Island, VA. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen on launch Pad-0A during sunrise at NASA's Wallops Flight Facility, Wednesday, January 8, 2014, Wallops Island, VA. Early this morning, Orbital Sciences Corp. decided to scrub today’s launch attempt of the Antares rocket and the Cygnus cargo spacecraft on the company’s first resupply mission to the International Space Station due to an unusually high level of space radiation that exceeded constraints imposed on Antares. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen on launch Pad-0A at NASA's Wallops Flight Facility, Monday, January 6, 2014 in advance of a planned Wednesday, Jan. 8th, 1:32 p.m. EST launch, Wallops Island, VA. The Antares will launch a Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Among the cargo aboard Cygnus set to launch to the space station are science experiments, crew provisions, spare parts and other hardware. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen on launch Pad-0A at NASA's Wallops Flight Facility, Monday, January 6, 2014 in advance of a planned Wednesday, Jan. 8th, 1:32 p.m. EST launch, Wallops Island, VA. The Antares will launch a Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Among the cargo aboard Cygnus set to launch to the space station are science experiments, crew provisions, spare parts and other hardware. Photo Credit: (NASA/Bill Ingalls)

The trail of an Orbital Sciences Corporation Antares rocket is seen in this two minute exposure as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

White-tailed deer graze near the Orbital Sciences Corporation Antares rocket, launch Pad-0A, at NASA's Wallops Flight Facility, Wednesday, January 8, 2014, Wallops Island, VA. Photo Credit: (NASA/Bill Ingalls)

White-tailed deer graze near the Orbital Sciences Corporation Antares rocket, launch Pad-0A, at NASA's Wallops Flight Facility, Wednesday, January 8, 2014, Wallops Island, VA. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Sunday, Nov. 12, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Sunday, Nov. 12, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Sunday, Nov. 12, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Sunday, Nov. 12, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Sunday, Nov. 12, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Sunday, Nov. 12, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Sunday, Nov. 12, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital Sciences Corporation Antares rocket launches from Pad-0A with the Cygnus spacecraft onboard, Sunday, July 13, 2014, at NASA's Wallops Flight Facility in Virginia. The Cygnus spacecraft is filled with over 3,000 pounds of supplies for the International Space Station, including science experiments, experiment hardware, spare parts, and crew provisions. The Orbital-2 mission is Orbital Sciences' second contracted cargo delivery flight to the space station for NASA. Photo Credit: (NASA/Aubrey Gemignani)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Sunday, Nov. 12, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Sunday, Nov. 12, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Sunday, Nov. 12, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Sunday, Nov. 12, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital Sciences Corporation Antares rocket launches from Pad-0A with the Cygnus spacecraft onboard, Sunday, July 13, 2014, at NASA's Wallops Flight Facility in Virginia. The Cygnus spacecraft is filled with over 3,000 pounds of supplies for the International Space Station, including science experiments, experiment hardware, spare parts, and crew provisions. The Orbital-2 mission is Orbital Sciences' second contracted cargo delivery flight to the space station for NASA. Photo Credit: (NASA/Aubrey Gemignani)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Sunday, Nov. 12, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Sunday, Nov. 12, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Sunday, Nov. 12, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Sunday, Nov. 12, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Sunday, Nov. 12, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Monday, May 21, 2018 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s ninth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Aubrey Gemignani)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Monday, May 21, 2018 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s ninth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Aubrey Gemignani)

A fisheye lens view of the Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, Saturday, Nov. 11, 2017 at NASA's Wallops Flight Facility, launch Pad-0A, in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Monday, May 21, 2018 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s ninth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Aubrey Gemignani)

This long exposure photograph shows the Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, being raised into the vertical position on launch Pad-0A, Thursday, Nov. 9, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver over 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Monday, May 21, 2018 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s ninth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Aubrey Gemignani)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, is seen on launch Pad-0A, Friday, Nov. 10, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket is rolled from the Horizontal Integration Facility (HIF) to launch Pad-0A, Thursday, Nov. 9, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver over 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Monday, May 21, 2018 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s ninth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Aubrey Gemignani)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Monday, May 21, 2018 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s ninth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Aubrey Gemignani)

A sign at the entrance launch Pad-0A is seen as the Orbital ATK Antares rocket is rolled from the Horizontal Integration Facility (HIF) to the pad, Thursday, Nov. 9, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver over 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Monday, May 21, 2018 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s ninth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Aubrey Gemignani)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Monday, May 21, 2018 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s ninth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Aubrey Gemignani)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Monday, May 21, 2018 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s ninth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Aubrey Gemignani)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Monday, May 21, 2018 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s ninth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Aubrey Gemignani)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, is raised into the vertical position on launch Pad-0A, Thursday, Nov. 9, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver over 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, is raised into the vertical position on launch Pad-0A, Thursday, Nov. 9, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver over 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Monday, May 21, 2018 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s ninth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Aubrey Gemignani)

The Orbital ATK Antares rocket is rolled from the Horizontal Integration Facility (HIF) to launch Pad-0A, Thursday, Nov. 9, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver over 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, is seen on launch Pad-0A, Friday, Nov. 10, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Monday, May 21, 2018 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s ninth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Aubrey Gemignani)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, is seen on launch Pad-0A, Friday, Nov. 10, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital Sciences Corporation Antares rocket, with the Cygnus spacecraft onboard, is seen on launch Pad-0A, Thursday, July 10, 2014, at NASA's Wallops Flight Facility in Virginia. The Antares will launch with the Cygnus spacecraft filled with over 3,000 pounds of supplies for the International Space Station, including science experiments, experiment hardware, spare parts, and crew provisions. The Orbital-2 mission is Orbital Sciences' second contracted cargo delivery flight to the space station for NASA. Photo Credit: (NASA/Bill Ingalls)

The Orbital Sciences Corporation Antares rocket, with the Cygnus spacecraft onboard, is seen on launch Pad-0A, Thursday, July 10, 2014, at NASA's Wallops Flight Facility in Virginia. The Antares will launch with the Cygnus spacecraft filled with over 3,000 pounds of supplies for the International Space Station, including science experiments, experiment hardware, spare parts, and crew provisions. The Orbital-2 mission is Orbital Sciences' second contracted cargo delivery flight to the space station for NASA. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, is seen on launch Pad-0A, Saturday, Nov. 11, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, is seen on launch Pad-0A, Saturday, Nov. 11, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital Sciences Corporation Antares rocket, with the Cygnus spacecraft onboard, is seen on launch Pad-0A, Thursday, July 10, 2014, at NASA's Wallops Flight Facility in Virginia. The Antares will launch with the Cygnus spacecraft filled with over 3,000 pounds of supplies for the International Space Station, including science experiments, experiment hardware, spare parts, and crew provisions. The Orbital-2 mission is Orbital Sciences' second contracted cargo delivery flight to the space station for NASA. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Monday, May 21, 2018 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s ninth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Aubrey Gemignani)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, is seen on launch Pad-0A, Friday, Nov. 10, 2017 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s eighth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Bill Ingalls)

The Orbital ATK Antares rocket, with the Cygnus spacecraft onboard, launches from Pad-0A, Monday, May 21, 2018 at NASA's Wallops Flight Facility in Virginia. Orbital ATK’s ninth contracted cargo resupply mission with NASA to the International Space Station will deliver approximately 7,400 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Photo Credit: (NASA/Aubrey Gemignani)

The Orbital Sciences Corporation Antares rocket, with the Cygnus spacecraft onboard, is seen during sunrise, Saturday, July 12, 2014, at launch Pad-0A of NASA's Wallops Flight Facility in Virginia. The Antares will launch with the Cygnus spacecraft filled with over 3,000 pounds of supplies for the International Space Station, including science experiments, experiment hardware, spare parts, and crew provisions. The Orbital-2 mission is Orbital Sciences' second contracted cargo delivery flight to the space station for NASA. Photo Credit: (NASA/Bill Ingalls)

The Orbital Sciences Corporation Antares rocket, with the Cygnus spacecraft onboard, is seen on launch Pad-0A, Friday, July 11, 2014, at NASA's Wallops Flight Facility in Virginia. The Antares will launch with the Cygnus spacecraft filled with over 3,000 pounds of supplies for the International Space Station, including science experiments, experiment hardware, spare parts, and crew provisions. The Orbital-2 mission is Orbital Sciences' second contracted cargo delivery flight to the space station for NASA. Photo Credit: (NASA/Bill Ingalls)

The Orbital Sciences Corporation Antares rocket, with the Cygnus spacecraft onboard, is seen, Saturday, July 12, 2014, at launch Pad-0A of NASA's Wallops Flight Facility in Virginia. The Antares will launch with the Cygnus spacecraft filled with over 3,000 pounds of supplies for the International Space Station, including science experiments, experiment hardware, spare parts, and crew provisions. The Orbital-2 mission is Orbital Sciences' second contracted cargo delivery flight to the space station for NASA. Photo Credit: (NASA/Bill Ingalls)

The Orbital Sciences Corporation Antares rocket, with the Cygnus spacecraft onboard, is seen, Saturday, July 12, 2014, at launch Pad-0A of NASA's Wallops Flight Facility in Virginia. The Antares will launch with the Cygnus spacecraft filled with over 3,000 pounds of supplies for the International Space Station, including science experiments, experiment hardware, spare parts, and crew provisions. The Orbital-2 mission is Orbital Sciences' second contracted cargo delivery flight to the space station for NASA. Photo Credit: (NASA/Bill Ingalls)

The full Moon sets in the fog behind the Orbital Sciences Corporation Antares rocket, with the Cygnus spacecraft onboard, Saturday, July 12, 2014, launch Pad-0A, NASA's Wallops Flight Facility in Virginia. The Antares will launch with the Cygnus spacecraft filled with over 3,000 pounds of supplies for the International Space Station, including science experiments, experiment hardware, spare parts, and crew provisions. The Orbital-2 mission is Orbital Sciences' second contracted cargo delivery flight to the space station for NASA. Photo Credit: (NASA/Bill Ingalls)

The Orbital Sciences Corporation Antares rocket, with the Cygnus spacecraft onboard, is seen during sunrise, Saturday, July 12, 2014, at launch Pad-0A of NASA's Wallops Flight Facility in Virginia. The Antares will launch with the Cygnus spacecraft filled with over 3,000 pounds of supplies for the International Space Station, including science experiments, experiment hardware, spare parts, and crew provisions. The Orbital-2 mission is Orbital Sciences' second contracted cargo delivery flight to the space station for NASA. Photo Credit: (NASA/Bill Ingalls)

The Orbital Sciences Corporation Antares rocket, with the Cygnus spacecraft onboard, is seen during sunrise, Saturday, July 12, 2014, at launch Pad-0A of NASA's Wallops Flight Facility in Virginia. The Antares will launch with the Cygnus spacecraft filled with over 3,000 pounds of supplies for the International Space Station, including science experiments, experiment hardware, spare parts, and crew provisions. The Orbital-2 mission is Orbital Sciences' second contracted cargo delivery flight to the space station for NASA. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Charles Bolden (right), his wife, Alexis Walker, and other guests watch the launch of the Orbital Sciences Corporation Antares rocket, with the Cygnus cargo spacecraft aboard, Sunday, July 13, 2014, at NASA’s Wallops Flight Facility in Virginia. Cygnus will deliver over 3,000 pounds of cargo to the Expedition 40 crew at the International Space Station, including science experiments, experiment hardware, spare parts, and crew provisions. Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Charles Bolden (right), his wife, Alexis Walker, and other guests watch the launch of the Orbital Sciences Corporation Antares rocket, with the Cygnus cargo spacecraft aboard, Sunday, July 13, 2014, at NASA’s Wallops Flight Facility in Virginia. Cygnus will deliver over 3,000 pounds of cargo to the Expedition 40 crew at the International Space Station, including science experiments, experiment hardware, spare parts, and crew provisions. Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Charles Bolden (left), speaks with Gina Burgin, Deputy Secretary of Administration, Commonwealth of Virginia, prior to the launch of the Orbital Sciences Corporation Antares rocket, with the Cygnus cargo spacecraft aboard, Sunday, July 13, 2014, at NASA’s Wallops Flight Facility in Virginia. Cygnus will deliver over 3,000 pounds of cargo to the Expedition 40 crew at the International Space Station, including science experiments, experiment hardware, spare parts, and crew provisions. Photo Credit: (NASA/Aubrey Gemignani)