This optical composite image shows asteroid 2017 YE5, taken on June 30, 2018, by the Cadi Ayyad University Morocco Oukaimeden Sky Survey, one of the first surveys to identify 2017 YE5 in December 2017. https://photojournal.jpl.nasa.gov/catalog/PIA22558

This composite of 11 images of asteroid 2017 BQ6 was generated with radar data collected using NASA's Goldstone Solar System Radar in California's Mojave Desert on Feb. 5, 2017, between 5:24 and 5:52 p.m. PST (8:24 to 8:52 p.m. EST / 1:24 to 1:52 UTC). The images have resolutions as fine as 12 feet (3.75 meters) per pixel. http://photojournal.jpl.nasa.gov/catalog/PIA21453

Artist's concept of what binary asteroid 2017 YE5 might look like. The two objects showed striking differences in radar reflectivity, which could indicate that they have different surface properties. A movie is available at https://photojournal.jpl.nasa.gov/catalog/PIA22556

Artist's illustration of the trajectory of asteroid 2017 YE5 through the solar system. At its closest approach to Earth, the asteroid came to within 16 times the distance between Earth and the moon. A movie is available at https://photojournal.jpl.nasa.gov/catalog/PIA22560

2017 Solar Eclipse totality as seen by the people attending the viewing event at the Oregon State Fairgrounds, Salem, Oregon.

CAPE CANAVERAL, Fla. – Modifications continue on the Mobile Launcher, or ML, at the Mobile Launcher Park Site at NASA’s Kennedy Space Center in Florida. A large crane is situated next to the ML for lifting of heavy metal beams and other construction materials. In 2013, the agency awarded a contract to J.P. Donovan Construction Inc. of Rockledge, Fla., to modify the ML, which is one of the key elements of ground support equipment that is being upgraded by the Ground Systems Development and Operations Program office at Kennedy. The ML will carry the SLS rocket and Orion spacecraft to Launch Pad 39B for its first mission, Exploration Mission 1, in 2017. Photo credit: NASA/Cory Huston

Taking a break from his duties at Ames Research Center Jacob Cohen, Ames Chief Scientist grabs his own view of the 2017 Solar Eclipse with his cellphone at 09:16:11 on August 21, 2017.

Radar images of the binary asteroid 2017 YE5 from NASA's Goldstone Solar System Radar (GSSR). The observations, conducted on June 23, 2018, show two lobes, but do not yet show two separate objects. A movie is available at https://photojournal.jpl.nasa.gov/catalog/PIA22557

Taking a break from his duties at the Ames Vertical Gun Range to look up at the eclipse over Ames Research Center in Mountain View Adam Parrish not only views but wears, on his forehead, the image of the 2017 Solar eclipse at 09:20:56 on August 21, 2017.

This panoramic view of the partial solar eclipse was taken from the roof of the aircraft hangar at NASA Langley Research Center in Hampton, Virginia. The eclipse in Hampton was about 85 percent of totality.

HDR Time lapse composite of the Solar Eclipse with the Falcon UH-25 in front of the NASA Langley hangar.

nhq201706070006 (06/07/2017) --- Vice President Mike Pence takes a group selfie with kids that were in attendance during an event where NASA introduced 12 new astronaut candidates, Wednesday, June 7, 2017 at NASA’s Johnson Space Center in Houston, Texas. After completing two years of training, the new astronaut candidates could be assigned to missions performing research on the International Space Station, launching from American soil on spacecraft built by commercial companies, and launching on deep space missions on NASA’s new Orion spacecraft and Space Launch System rocket. Photo Credit: (NASA/Bill Ingalls)

nhq201706070003 (06/07/2017) --- Vice President Mike Pence delivers remarks during an event where NASA introduced 12 new astronaut candidates, Wednesday, June 7, 2017 at NASA’s Johnson Space Center in Houston, Texas. After completing two years of training, the new astronaut candidates could be assigned to missions performing research on the International Space Station, launching from American soil on spacecraft built by commercial companies, and launching on deep space missions on NASA’s new Orion spacecraft and Space Launch System rocket. Photo Credit: (NASA/Bill Ingalls)

Bi-static radar images of the binary asteroid 2017 YE5 from the Arecibo Observatory and the Green Bank Observatory on June 25. The observations show that the asteroid consists of two separate objects in orbit around each other. A movie is available at https://photojournal.jpl.nasa.gov/catalog/PIA22559

VANDENBERG AFB, Calif. – An Orbital Sciences Pegasus XL rocket that will carry NASA's IRIS spacecraft is positioned for processing at Vandenberg. IRIS is short for Interface Region Imaging Spectrograph and the spacecraft's mission will improve our understanding of how heat and energy move through the deepest levels of the sun’s atmosphere, thereby increasing our ability to forecast space weather. Photo credit: VAFB_Tony Vauelin

CAPE CANAVERAL, Fla. - At NASA's Kennedy Space Center in Florida, STS-131 Mission Specialist Rick Mastracchio takes his instructor, Battalion Chief David Seymour, at left, for a ride in an M-113 armored personnel carrier during driving practice. Also along for the ride is STS-131 Commander Alan Poindexter. An M-113 is kept at the foot of the launch pad in case an emergency egress from the vicinity of the pad is needed. The crew members of space shuttle Discovery's STS-131 mission are at Kennedy for training related to their launch dress rehearsal, the Terminal Countdown Demonstration Test. The seven-member crew will deliver the multi-purpose logistics module Leonardo, filled with resupply stowage platforms and racks, to the International Space Station aboard Discovery. Targeted for launch on April 5, STS-131 will be the 33rd shuttle mission to the station and the 131st shuttle mission overall. For information on the STS-131 mission and crew, visit http:__www.nasa.gov_mission_pages_shuttle_shuttlemissions_sts131_index.html. Photo credit: NASA_Kim Shiflett

2017 NASA Earth Day at Union Station, Washington DC

2017 NASA Earth Day at Union Station, Washington DC

Vice President Mike Pence cuts a cake presented to him on his 58th birthday while touring the Christopher C. Kraft Jr. Mission Control Center, Wednesday, June 7, 2017 at NASA’s Johnson Space Center in Houston, Texas. The Vice President was at the space center to welcome nhq201706070008 (06/07/2017) --- America’s newest astronaut candidates, chosen from more than 18,300 applicants to carry the torch for future human space exploration. After completing two years of training, the new astronaut candidates could be assigned to missions performing research on the International Space Station, launching from American soil on spacecraft built by commercial companies, and launching on deep space missions on NASA’s new Orion spacecraft and Space Launch System rocket. Photo Credit: (NASA/Bill Ingalls)

nhq201706070007 (06/07/2017) ---Vice President Mike Pence, center, listens to NASA Deputy Chief Flight Director Holly Ridings, right, and NASA Flight Director Rick Henfling during a tour of the Christopher C. Kraft Jr. Mission Control Center, Wednesday, June 7, 2017 at NASA’s Johnson Space Center in Houston, Texas. The Vice President was at the space center to welcome America’s newest astronaut candidates, chosen from more than 18,300 applicants to carry the torch for future human space exploration. After completing two years of training, the new astronaut candidates could be assigned to missions performing research on the International Space Station, launching from American soil on spacecraft built by commercial companies, and launching on deep space missions on NASA’s new Orion spacecraft and Space Launch System rocket. Photo Credit: (NASA/Bill Ingalls)

NASA Ames invited the public to participate in the 2017 Solar Eclipse viewing event on August 21, 2017.

HDR image of the Falcon UH-25 in front of the NASA Langley hangar during the Solar Eclipse.

NASA Administrator Jim Bridenstine poses for a picture with the 2017 astronaut candidate class after taping a live episode of the Administrator's monthly chat show, Watch This Space, Thursday, Sept. 27, 2018 in the Webb Auditorium at NASA Headquarters in Washington. NASA astronaut candidates, back row from left, Jonny Kim, Joshua Kutryk of the Canadian Space Agency, Jasmin Moghbeli, Loral O’Hara, Frank Rubio, Jennifer Sidey-Gibbons of the Canadian Space Agency, Jessica Watkins, front row from left, Kayla Barron, Zena Cardman, Raja Chari, Matthew Dominick, Bob Hines, and Warren Hoburg. Photo Credit: (NASA/Joel Kowsky)

VANDENBERG AIR FORCE BASE, Calif. – The Pegasus payload fairing has been opened to reveal NASA’s Nuclear Spectroscopic Telescope Array, or NuSTAR, in Orbital Sciences’ hangar on Vandenberg Air Force Base in California. Access to the spacecraft is needed for compatibility testing to verify communication with a tracking station in Hawaii. With the change in the launch timeframe to June, this station will be needed to support launch. After processing of Orbital’s Pegasus XL rocket and the spacecraft are complete, they will be flown on Orbital's L-1011 carrier aircraft from Vandenberg to the Ronald Reagan Ballistic Missile Defense Test Site on the Pacific Ocean’s Kwajalein Atoll for launch. The high-energy X-ray telescope will conduct a census of black holes, map radioactive material in young supernovae remnants, and study the origins of cosmic rays and the extreme physics around collapsed stars. For more information, visit http://www.nasa.gov/nustar. Photo credit: NASA/Randy Beaudoin, VAFB

CAPE CANAVERAL, Fla. – An emergency exit, or Mode II/IV, exercise is under way in a bunker of Launch Pad 39A at NASA's Kennedy Space Center in Florida. The exercise involves NASA fire rescue personnel, volunteers portraying astronauts with simulated injuries, helicopters and personnel from the Air Force’s 920th Rescue Wing, and medical trauma teams at three Central Florida hospitals. The drill allows teams to practice an emergency response at the launch pad, including helicopter evacuation to local hospitals. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – In the Operations and Checkout Building at NASA's Kennedy Space Center in Florida, STS-119 Mission Specialist Richard Arnold gets help from a suit technician in the final fitting of his launch and entry suit. Arnold will be making his first shuttle flight. The 14-day mission is the 28th to the International Space Station and the 125th space shuttle flight. Discovery will deliver the final pair of power-generating solar array wings and the S6 truss segment. Installation of S6 will signal the station's readiness to house a six-member crew for conducting increased science. Liftoff of Discovery is scheduled for 9:20 p.m. EDT on March 11. Photo credit: NASA/Kim Shiflett

This color picture of the limb of the Earth, looking north past Antarctica, is a mosaic of 11 images taken during a ten-minute period near 5:45 p.m. PST Dec. 8, 1990, by Galileo's imaging system. Red, green and violet filters were used. The picture spans about 1,600 miles across the south polar latitudes of our planet The morning day/night terminator is toward the right. The South Pole is out of sight below the picture; the visible areas of Antarctica are those lying generally south of South America. The violet-blue envelope of Earth's atmosphere is prominent along the limb to the left. At lower left, the dark blue Amundsen Sea lies to the left of the Walgreen and Bakutis Coasts. Beyond it, Peter Island reacts with the winds to produce a striking pattern of atmosperic waves. (JPL ref. No. P-37340)

nhq201706070004 (06/07/2017) --- Vice President Mike Pence poses for a group photograph with NASA's 12 new astronaut candidates, Wednesday, June 7, 2017 at NASA’s Johnson Space Center in Houston, Texas. NASA astronaut candidates, standing from left, Robb Kulin, Jonathan Kim, Robert Hines, Warren Hoburg, Matthew Dominick, Kayla Barron, Jessica Watkins, from left kneeling, Francisco Rubio, Loral O’Hara, Jasmin Moghbeli, Zena Cardman, and Raja Chari. After completing two years of training, the new astronaut candidates could be assigned to missions performing research on the International Space Station, launching from American soil on spacecraft built by commercial companies, and launching on deep space missions on NASA’s new Orion spacecraft and Space Launch System rocket. Photo Credit: (NASA/Bill Ingalls) Original Filename

Happy Earth Day! Explore the diverse colors, unique shapes and striking patterns of our very favorite planet, Earth - as only NASA can see it. Credit: NASA/Goddard #nasagoddard <b><a href="http://www.nasa.gov/audience/formedia/features/MP_Photo_Guidelines.html" rel="nofollow">NASA image use policy.</a></b> <b><a href="http://www.nasa.gov/centers/goddard/home/index.html" rel="nofollow">NASA Goddard Space Flight Center</a></b> enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission. <b>Follow us on <a href="http://twitter.com/NASAGoddardPix" rel="nofollow">Twitter</a></b> <b>Like us on <a href="http://www.facebook.com/pages/Greenbelt-MD/NASA-Goddard/395013845897?ref=tsd" rel="nofollow">Facebook</a></b> <b>Find us on <a href="http://instagrid.me/nasagoddard/?vm=grid" rel="nofollow">Instagram</a></b>

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 ASCAN Tour of KSC at O&C Hi-Bay Orion Tour

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 ASCAN Tour of KSC at O&C Hi-Bay Orion Tour

2017 ASCAN Tour of KSC at O&C Hi-Bay Orion Tour

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 Student Launch activities at the Bragg Farm in Toney, Alabama

2017 interns attended closing ceremony and career fair at Goddard on August 9, 2017. Chris Scolese gave remarks and interns talked with companies about prospective career opportunities

2017 interns attended closing ceremony and career fair at Goddard on August 9, 2017. Chris Scolese gave remarks and interns talked with companies about prospective career opportunities

2017 interns attended closing ceremony and career fair at Goddard on August 9, 2017. Chris Scolese gave remarks and interns talked with companies about prospective opportunities

2017 interns attended closing ceremony and career fair at Goddard on August 9, 2017. Chris Scolese gave remarks and interns talked with companies about prospective career opportunities.

2017 interns attended closing ceremony and career fair at Goddard on August 9 2017. Chris Scolese gave remarks and interns talked with companies about prospective career opportunities

2017 interns attended closing ceremony and career fair at Goddard on Aguust 9, 2017. Chris Scolese gave remarks and interns talked with companies about prospective career opportunties

2017 interns attended closing ceremony and career fair at Goddard on August 9 2017. Chris Scolese gave remarks and interns talked with companies about prospective career opportunities

2017 NASA Earth Day at Union Station, Washington DC. Mr. Ernie Wright.

TODD MAY, MSFC CENTER DIRECTOR, WITH ALABAMA GOVERNOR ROBERT BENTLEY AND ASTRONAUT DON PETTIT DURING 2017 NASA DAY IN MONTGOMERY, ALABAMA.

Barbara Grote, sketching the phases of the Moon's transit across the sun on the Patio of Building 3 at NASA Ames during the 2017 Solar Eclipse.

NASA Administrator Jim Bridenstine asks a question of the 2017 astronaut candidates during a live episode of the Administrator's monthly chat show, Watch This Space, Thursday, Sept. 27, 2018 in the Webb Auditorium at NASA Headquarters in Washington. NASA's newest astronaut candidate class has started their two years of training, after which the new astronaut candidates could be assigned to missions performing research on the International Space Station, launching from American soil on spacecraft built by commercial companies, and launching on deep space missions on NASA’s new Orion spacecraft and Space Launch System rocket. Photo Credit: (NASA/Joel Kowsky)

NASA Administrator Jim Bridenstine holds up the patch of the 2017 astronaut class during a live episode of the Administrator's monthly chat show, Watch This Space, Thursday, Sept. 27, 2018 in the Webb Auditorium at NASA Headquarters in Washington. NASA's newest astronaut candidate class has started their two years of training, after which the new astronaut candidates could be assigned to missions performing research on the International Space Station, launching from American soil on spacecraft built by commercial companies, and launching on deep space missions on NASA’s new Orion spacecraft and Space Launch System rocket. Photo Credit: (NASA/Joel Kowsky)

2017 interns participated in a summer poster session at Goddard on August 3, 2017. Awards were given to top posters in categories of: computer science/IT, engineering, GSFC functional services, and science. Colleen Hartman, Nancy Abell and Juan Ramon presented awards.

From a million miles out in space, NASA’s Earth Polychromatic Imaging Camera (EPIC) captured natural color images of the moon’s shadow crossing over North America on Aug. 21, 2017. EPIC is aboard NOAA’s Deep Space Climate Observatory (DSCOVR), where it photographs the full sunlit side of Earth every day, giving it a unique view of total solar eclipses. EPIC normally takes about 20 to 22 images of Earth per day, so this animation appears to speed up the progression of the eclipse. To see the images of Earth every day, go to: <a href="https://epic.gsfc.nasa.gov" rel="nofollow">epic.gsfc.nasa.gov</a> <b><a href="http://www.nasa.gov/audience/formedia/features/MP_Photo_Guidelines.html" rel="nofollow">NASA image use policy.</a></b> <b><a href="http://www.nasa.gov/centers/goddard/home/index.html" rel="nofollow">NASA Goddard Space Flight Center</a></b> enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission. <b>Follow us on <a href="http://twitter.com/NASAGoddardPix" rel="nofollow">Twitter</a></b> <b>Like us on <a href="http://www.facebook.com/pages/Greenbelt-MD/NASA-Goddard/395013845897?ref=tsd" rel="nofollow">Facebook</a></b> <b>Find us on <a href="http://instagrid.me/nasagoddard/?vm=grid" rel="nofollow">Instagram</a></b>

Left to Right: Raymond Tolman, Jeanie McKee and Dorothy Gasper-AIU watching the Moon's transit across the sun in front of Building 3 at NASA Ames during the 2017 Solar Eclipse.

jsc2017e067116 (June 6, 2017) --- NASA portrait of 2017 Astronaut Candidate Warren Hoburg in front of a T-38 trainer aircraft at Ellington Field near NASA’s Johnson Space Center in Houston, Texas.

jsc2017e067113 (June 6, 2017) --- NASA portrait of 2017 Astronaut Candidate Raja Chari in front of a T-38 trainer aircraft at Ellington Field near NASA’s Johnson Space Center in Houston, Texas.

jsc2017e067122 (June 6, 2017) --- NASA portrait of 2017 Astronaut Candidate Jasmin Moghbeli in front of a T-38 trainer aircraft at Ellington Field near NASA’s Johnson Space Center in Houston, Texas.

jsc2017e067124 (June 6, 2017) --- NASA portrait of 2017 Astronaut Candidate Zena Cardman in front of a T-38 trainer aircraft at Ellington Field near NASA’s Johnson Space Center in Houston, Texas.

jsc2017e067114 (June 6, 2017) --- NASA portrait of 2017 Astronaut Candidate Kayla Barron in front of a T-38 trainer aircraft at Ellington Field near NASA’s Johnson Space Center in Houston, Texas.

jsc2017e067117 (June 6, 2017) --- NASA portrait of 2017 Astronaut Candidate Jonny Kim in front of a T-38 trainer aircraft at Ellington Field near NASA’s Johnson Space Center in Houston, Texas.

jsc2017e067121 (June 6, 2017) --- NASA portrait of 2017 Astronaut Candidate Jessica Watkins in front of a T-38 trainer aircraft at Ellington Field near NASA’s Johnson Space Center in Houston, Texas.

jsc2017e067274 (June 6, 2017) --- NASA’s 2017 Astronaut Candidate Class stopped for a group photo while getting fitted for flight suits at Ellington Airport near NASA’s Johnson Space Center in Houston, Texas.

jsc2017e067120 (June 6, 2017) --- NASA portrait of 2017 Astronaut Candidate Loral O'Hara in front of a T-38 trainer aircraft at Ellington Field near NASA’s Johnson Space Center in Houston, Texas.

jsc2017e067119 (June 6, 2017) --- NASA portrait of 2017 Astronaut Candidate Frank Rubio in front of a T-38 trainer aircraft at Ellington Field near NASA’s Johnson Space Center in Houston, Texas.

jsc2017e067123 (June 6, 2017) --- NASA portrait of 2017 Astronaut Candidate Bob Hines in front of a T-38 trainer aircraft at Ellington Field near NASA’s Johnson Space Center in Houston, Texas.

jsc2017e067273 (June 6, 2017) --- NASA’s 2017 Astronaut Candidate Class stopped for a group photo while getting fitted for flight suits at Ellington Airport near NASA’s Johnson Space Center in Houston, Texas.

Students from Southwestern Indian Polytechnic Institute in Albuquerque, New Mexico, celebrate having captured first place and a $5,000 cash prize in the 2017 Swarmathon. The event at the Kennedy Space Center Visitor Complex may lead to developing technology that could revolutionize space exploration by more effectively and efficiently locating hidden resources while astronauts explore distant destinations.

Veterans Day Commemoration was held at Goddard on November 15, 2017. Guest speaker Jared Marinos gave talk “Millennial Journey of a Veteran Transition”

Veterans Day Commemoration was held at Goddard on November 15, 2017. Guest speaker Jared Marinos gave talk “Millenial Journey of a Veteran Transition”

2017 Solar Eclipse first images from Oregon State Fair Grounds, Salem, Oregon. This image taken at 10:17:13 on August 21, 2017 as Oregon has almost reached totality.

2017 Solar Eclipse first images from Oregon State Fair Grounds, Salem, Oregon. This image taken at 10:18:30 on August 21, 2017 where they have reached totality.

2017 Solar Eclipse first images from Oregon State Fair Grounds, Salem, Oregon. This image was taken at 10:44:10 on August 21, 2017 following totality.

2017 Solar Eclipse first images from Oregon State Fair Grounds, Salem, Oregon. This image taken at 10:19:24 on August 21, 2017 as Oregon begins to see first light 'diamond' following totality.

Former Spacelab 1 Mission scientist Rick Chappell views the August 21, 2017 solar eclipse with his wife. Chappell, a former associate director for science at Marshall and now a physics professor at Vanderbilt University in Nashville, joined a throng of Marshall personnel to marvel at the eclipse.