Former President George H.W. Bush paid a visit to NASA's Johnson Space Center to speak with Expedition 46 Commander Scott Kelly and Flight Engineer Tim Kopra and take a tour of the Space Vehicle Mockup Facility. Kelly’s twin brother, Mark Kelly and his wife, former Congresswoman Gabrielle Giffords were also present. Photo Date: February 5, 2016. Location: Building 30 - ISS Flight Control Room. Photographer: Robert Markowitz

jsc2018e067361_alt (Aug. 1, 2018) --- NASA Astronaut Bob Behnken has been assigned to the first flight of SpaceX’s Crew Dragon.

jsc2019e014139_alt (3/8/2019) --- Photo documentation of the Hermes facility. Hermes is a research facility on the ISS aimed at regolith and granular material investigations with applications to asteroids, planetary science, and exploration. It is a reconfigurable on-orbit facility capable of accommodating up to four user-configurable experiment volumes at a time. The facility provides long duration exposure to microgravity, vacuum, power, lighting, cameras and customizable experiment tools with ground commanding capability.

jsc2017e049162 (April 24, 2017) --- Flight Director Brian Smith, Capcom Astronaut Jessica Meir along with Astronaut Jeff Williams monitor activities in Mission Control as President Donald Trump, First Daughter Ivanka Trump and NASA astronaut Kate Rubins make a special Earth-to-space call from the Oval Office to personally congratulate NASA astronaut Peggy Whitson for her record-breaking stay aboard the International Space Station. (Photo Credit: NASA/Robert Markowitz)

iss057-s-002 (November 8, 2017) --- The official portrait of the five-member Expedition 57 crew. In the front row from left are Serena Auñón-Chancellor of NASA, Commander Alexander Gerst from the European Space Agency and Sergei Prokopev of Roscosmos. In the back row from left are Flight Engineers Aleksey Ovchinin of Roscosmos and Nick Hague from NASA.

Expedition 45/46 Commander, Astronaut Scott Kelly along with his brother, former Astronaut Mark Kelly speak to news media outlets about Scott Kelly's 1-year mission aboard the International Space Station. Photo Date: January 19, 2015. Location: Building 2. Photographer: Robert Markowitz

jsc2018e066248_alt (Aug. 1, 2018) --- NASA Astronaut Josh Cassada has been assigned to the second flight of Boeing’s CST-100 Starliner.

jsc2019e025857_alt (3/8/2019) --- Seeker and its communication link, called Kenobi CubeSat Vehicles. Seeker is an automated extravehicular free-flying inspector CubeSat. The primary objective of the Seeker mission is to demonstrate a path toward an inspection capability for future crewed space missions. The Seeker investigation flies the robot on basic maneuvers to take high-resolution images of the Cygnus resupply vehicle after it leaves the International Space Station (ISS).

Expedition 45/46 Commander, Astronaut Scott Kelly along with his brother, former Astronaut Mark Kelly speak to news media outlets about Scott Kelly's 1-year mission aboard the International Space Station. Photo Date: January 19, 2015. Location: Building 2. Photographer: Robert Markowitz

Group photo representating past and present Multi-Media Services (MMS) photographer and videographers that have supported Zero-G Reduced Gravity Office operations throughout the year prior to the programs final flight on August 29, 2014. Photo Date: August 18, 2014. Location: Ellington Field - Hangar 990. Photographer: Robert Markowitz

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.

jsc2018e003247 (Jan. 31, 2018) --- The lunar eclipse "Blood Moon" was photographed from the Johnson Space Center in Houston, Texas, during the early morning hours of Jan. 31, 2018. Credit: NASA/Robert Markowitz

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.

jsc2018e095908 (Nov. 7, 2018) --- NASA astronaut candidate Kayla Barron participates in spacewalk training at the Neutral Buoyancy Laboratory at NASA's Johnson Space Center in Houston, Texas.

Spacesuit engineers demonstrate how four crew members would be arranged for launch inside the Orion spacecraft, using a mockup of the vehicle at Johnson Space Center in Houston on Oct. 24, 2014. Part of Batch image transfer from Flickr.

Official portrait of JAXA astronaut Soichi Noguchi in EMU suit. Photo taken in bldg 8, rm. 183 - Photo studio.

jsc2019e001293_alt (Feb. 13, 2019) --- NASA Astronaut E. Michael “Mike” Fincke has been assigned to the first flight of Boeing’s CST-100 Starliner. Fincke takes the place of astronaut Eric Boe, originally assigned to the mission in August 2018.

jsc2020e042654_alt (Sept. 29, 2020) --- Portrait of JAXA (Japan Aerospace Exploration Agency) astronaut and SpaceX Crew-2 Mission Specialist Akihiko Hoshide.

NASA exhibits on display at Super Bowl - NFL Live Event at Discovery Green. Photo Date: January 26, 2017. Location: Discovery Green - Houston, TX. Photographer: Robert Markowitz

jsc2020e041216 (Sept. 17, 2020) --- NASA astronaut Kayla Barron participates in T-38 preflight training at Ellington Field in Houston, Texas.

jsc2018e067582_alt (Aug. 1, 2018) --- NASA Astronaut Eric Boe was assigned to the first flight of Boeing’s CST-100 Starliner in August 2018. Editor's note: Boe was replaced by NASA Astronaut E. Michael “Mike” Fincke in January 2019 due to medical reasons; he will replace Fincke as the assistant to the chief for commercial crew in the astronaut office at NASA’s Johnson Space Center.

iss056-s-002 (March 8, 2018) --- The official portrait of the Expedition 56 crew. In the front row from left are astronauts Drew Feustel of NASA and Alexander Gerst of the European Space Agency. In the rear from left are crew members Oleg Artemyev of Roscosmos, Ricky Arnold of NASA, Sergei Prokopev of Roscosmos and Serena Auñón-Chancellor of NASA.

jsc2018e003249 (Jan. 31, 2018) --- The lunar eclipse "Blood Moon" was photographed from the Johnson Space Center in Houston, Texas, during the early morning hours of Jan. 31, 2018. Credit: NASA/Robert Markowitz

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.

jsc2018e067958 (Aug. 2, 2018) --- NASA astronauts Victor Glover (left) and Mike Hopkins pose for a portrait in front of the SpaceX Dragon Commercial Crew spacecraft mock up at NASA's Johnson Space Center in Houston, Texas.

jsc2019e040189 (July 18, 2019) --- Apollo alumni and NASA employees came together on July 18th at Johnson Space Center's Gilruth Center in Houston for an evening of meeting, mingling, and memorabilia celebrating the 50th anniversary of Apollo 11 and the entire Apollo program.

Expedition 44/45 crew members Oleg Kononenko, Kimiya Yui and Kjell Lindgren during emergency scenarios training in the ISS mockups. Photo Date: March 11, 2015. Location: Building 9NW - ISS Mockups. Photographer: Robert Markowitz

jsc2017e049163 (April 24, 2017) --- Flight Director Brian Smith, Capcom Astronaut Jessica Meir along with Astronaut Jeff Williams monitor activities in Mission Control as President Donald Trump, First Daughter Ivanka Trump and NASA astronaut Kate Rubins make a special Earth-to-space call from the Oval Office to personally congratulate NASA astronaut Peggy Whitson for her record-breaking stay aboard the International Space Station. (Photo Credit: NASA/Robert Markowitz)

jsc2018e003248 (Jan. 31, 2018) --- The lunar eclipse "Blood Moon" was photographed from the Johnson Space Center in Houston, Texas, during the early morning hours of Jan. 31, 2018. Credit: NASA/Robert Markowitz

jsc2018e009198 (February 21, 2018) --- (From left) 2017 NASA astronaut candidates Bob Hines, Matthew Dominick, Jasmin Moghbeli, and Raja Chari take hold to their surroundings during their reduced gravity flight aboard Canadian Space Agency’s Dassault Falcon 20 Jet. Photo Credit: (NASA/Robert Markowitz)

jsc2017e067125 (June 6, 2017) --- The members of the 2017 NASA Astronaut Class are (from left) Zena Cardman, Jasmin Moghbeli, Jonny Kim, Frank Rubio, Matthew Dominick, Warren Hoburg, Robb Kulin, Kayla Barron, Bob Hines, Raja Chari, Loral O' Hara and Jessica Watkins. Photo Credit: NASA/Robert Markowitz

jsc2018e003252 (Jan. 31, 2018) --- The lunar eclipse "Blood Moon" was photographed from the Johnson Space Center in Houston, Texas, during the early morning hours of Jan. 31, 2018. Credit: NASA/Robert Markowitz

jsc2018e003254 (Jan. 31, 2018) --- The lunar eclipse "Blood Moon" was photographed from the Johnson Space Center in Houston, Texas, during the early morning hours of Jan. 31, 2018. Credit: NASA/Robert Markowitz

iss061-s-002 (May 29, 2019) --- The official Expedition 61 crew portrait with (from left) NASA astronaut Andrew Morgan, Roscosmos cosmonaut Alexander Skvortsov, astronaut Luca Parmitano of ESA (European Space Agency), Roscosmos cosmonaut Oleg Skripochka, and NASA astronauts Jessica Meir and Christina Koch.

jsc2018e095898 (November 7, 2018) --- 2017 NASA astronaut candidate Kayla Barron is helped into a spacesuit prior to underwater spacewalk training at NASA Johnson Space Center’s Neutral Buoyancy Laboratory in Houston. Photo Credit: (NASA/Robert Markowitz)

jsc2018e009222 (February 21, 2018) --- (From left) 2017 NASA astronaut candidates Warren Hoburg, Kayla Barron, Frank Rubio, and Zena Cardman take hold to their surroundings during their reduced gravity flight aboard Canadian Space Agency’s Dassault Falcon 20 Jet. Photo Credit: (NASA/Robert Markowitz)

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.

jsc2018e095911 (November 7, 2018) --- 2017 NASA astronaut candidate Jonny Kim is helped into a spacesuit prior to underwater spacewalk training at NASA Johnson Space Center’s Neutral Buoyancy Laboratory in Houston. Photo Credit: (NASA/Robert Markowitz)

jsc2018e003245 (Jan. 31, 2018) --- The lunar eclipse "Blood Moon" was photographed from the Johnson Space Center in Houston, Texas, during the early morning hours of Jan. 31, 2018. Credit: NASA/Robert Markowitz

Test Engineer Chris McWilliams looks in on test equipment in the Boom Box High Pressure Test Enclosure in the Building 353H at Johnson Space Center’s Energy Systems Test Area. Photo Date: January 16, 2020. Photo Credit: (NASA/Robert Markowitz)

jsc2018e095931 (November 7, 2018) --- 2017 NASA astronaut candidate Jonny Kim prepares for underwater spacewalk training at NASA Johnson Space Center’s Neutral Buoyancy Laboratory in Houston. Photo Credit: (NASA/Robert Markowitz)

Spacesuit engineers demonstrate how four crew members would be arranged for launch inside the Orion spacecraft, using a mockup of the vehicle at Johnson Space Center in Houston on Oct. 24, 2014. Part of Batch image transfer from Flickr.

iss053-s-002 (June 20, 2017) --- The six-member Expedition 53 crew poses for an official crew portrait at the Johnson Space Center in Houston, Texas. Seated in the front (from left) are Flight Engineer Alexander Misurkin of Roscosmos and Commander Randy Bresnik of NASA. Standing in the back (from left) are NASA astronauts Joe Acaba and Mark Vande Hei, Sergey Ryazanskiy of Roscosmos and Paolo Nespoli of the European Space Agency.

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.

jsc2018e067716_alt (Aug. 1, 2018) --- NASA Astronaut Suni Williams has been assigned to the second flight of Boeing’s CST-100 Starliner.

jsc2018e095935 (November 7, 2018) --- 2017 NASA astronaut candidate Kayla Barron prepares for underwater spacewalk training at NASA Johnson Space Center’s Neutral Buoyancy Laboratory in Houston. Photo Credit: (NASA/Robert Markowitz)

jsc2019e022584_alt (Sept. 12, 2019) --- Expedition 62 crew portrait with NASA astronaut Andrew Morgan, Roscosmos cosmonaut Oleg Skripochka and NASA astronaut Jessica Meir.

iss057-s-002b (Nov. 8, 2017) --- Official crew portrait of Expedition 57 crew members (from left) Serena Auñón-Chancellor of NASA, Alexander Gerst of ESA (European Space Agency) and Sergey Prokopyev of Roscosmos.

jsc2018e067775_alt (Aug. 1, 2018) --- NASA Astronaut Victor Glover has been assigned to the second flight of SpaceX’s Crew Dragon.

Expedition 45/46 Commander, Astronaut Scott Kelly along with his brother, former Astronaut Mark Kelly speak to news media outlets about Scott Kelly's 1-year mission aboard the International Space Station. Photo Date: January 19, 2015. Location: Building 2. Photographer: Robert Markowitz

jsc2017e049157 (April 24, 2017) --- Flight Director Brian Smith, Capcom Astronaut Jessica Meir along with Astronaut Jeff Williams monitor activities in Mission Control as President Donald Trump, First Daughter Ivanka Trump and NASA astronaut Kate Rubins make a special Earth-to-space call from the Oval Office to personally congratulate NASA astronaut Peggy Whitson for her record-breaking stay aboard the International Space Station. (Photo Credit: NASA/Robert Markowitz)

Official NASA Portrait of Jon B. Olansen. Photo Date: September 12, 2018. Location: Building 8, Room 183 - Photo Studio. Photographer: Robert Markowitz

NASA exhibits on display at Super Bowl - NFL Live Event at Discovery Green. Photo Date: January 26, 2017. Location: Discovery Green - Houston, TX. Photographer: Robert Markowitz

jsc2019e025859_alt (3/8/2019) --- Seeker and its communication link, called Kenobi CubeSat Vehicles. Seeker is an automated extravehicular free-flying inspector CubeSat. The primary objective of the Seeker mission is to demonstrate a path toward an inspection capability for future crewed space missions. The Seeker investigation flies the robot on basic maneuvers to take high-resolution images of the Cygnus resupply vehicle after it leaves the International Space Station (ISS).

jsc2018e003250 (Jan. 31, 2018) --- The lunar eclipse "Blood Moon" was photographed from the Johnson Space Center in Houston, Texas, during the early morning hours of Jan. 31, 2018. Credit: NASA/Robert Markowitz

iss055-s-002 (Oct. 6, 2017) --- The six-member Expedition 55 crew poses for an official crew portrait at the Johnson Space Center in Houston, Texas. In the front row (from left) are Scott Tingle of NASA, Commander Anton Shkaplerov of Roscosmos and Norishige Kanai of the Japan Aerospace Exploration Agency. In the back row (from left) are NASA astronauts Ricky Arnold and Andrew Feustel and Roscosmos cosmonaut Oleg Artemyev.

jsc2020e041210 (Sept. 17, 2020) --- NASA astronaut Kayla Barron participates in T-38 preflight training at Ellington Field in Houston, Texas.

jsc2018e088236 (July 3, 2017) --- Portrait of NASA astronaut Nicole Mann seated at the CAPCOM console in Houston's Mission Control Center during the release of the SpaceX Dragon cargo vehicle from the International Space Station.

jsc2017e049158 (April 24, 2017) --- Flight Director Brian Smith, Capcom Astronaut Jessica Meir along with Astronaut Jeff Williams monitor activities in Mission Control as President Donald Trump, First Daughter Ivanka Trump and NASA astronaut Kate Rubins make a special Earth-to-space call from the Oval Office to personally congratulate NASA astronaut Peggy Whitson for her record-breaking stay aboard the International Space Station. (Photo Credit: NASA/Robert Markowitz)

iss054-s-002 (May 8, 2017) --- The six-member Expedition 54 crew poses for an official crew portrait at the Johnson Space Center in Houston, Texas. From left are Flight Engineers Joe Acaba and Mark Vande Hei of NASA, Commander Alexander Misurkin of Roscosmos and Flight Engineers Anton Shkaplerov of Roscosmos, Scott Tingle of NASA and Norishige Kanai of the Japan Aerospace Exploration Agency.

jsc2018e095941 (November 7, 2018) --- 2017 NASA astronaut candidate Jonny Kim is lowered into the training pool for spacewalk training at NASA Johnson Space Center’s Neutral Buoyancy Laboratory in Houston. Photo Credit: (NASA/Robert Markowitz)

jsc2018e059572_alt (5/29/2018) --- The miniPCR platform, used for the amplification of nucleic acids, from the Genes in Space investigations combined with the MinION, nucleic acid sequencer, from the Biomolecule Sequencer experiment makes up the Biomolecule Extraction and Sequencing Technology (BEST) payload. With this hardware, including the pipettes, astronauts have demonstrated a complete sample-to-answer process for DNA and RNA sequencing on board the ISS.

jsc2018e095901 (Nov. 7, 2018) --- NASA astronaut candidate Kayla Barron participates in spacewalk training at the Neutral Buoyancy Laboratory at NASA's Johnson Space Center in Houston, Texas.

jsc2019e040271 (July 18, 2019) --- Apollo alumni and NASA employees came together on July 18th at Johnson Space Center's Gilruth Center in Houston for an evening of meeting, mingling, and memorabilia celebrating the 50th anniversary of Apollo 11 and the entire Apollo program.

jsc2018e067637_alt (Aug. 1, 2018) --- NASA Astronaut Nicole Mann has been assigned to the first flight of Boeing’s CST-100 Starliner.

jsc2019e040215 (July 18, 2019) --- Apollo alumni and NASA employees came together on July 18th at Johnson Space Center's Gilruth Center in Houston for an evening of meeting, mingling, and memorabilia celebrating the 50th anniversary of Apollo 11 and the entire Apollo program.

jsc2017e049161 (April 24, 2017) --- Flight Director Brian Smith, Capcom Astronaut Jessica Meir along with Astronaut Jeff Williams monitor activities in Mission Control as President Donald Trump, First Daughter Ivanka Trump and NASA astronaut Kate Rubins make a special Earth-to-space call from the Oval Office to personally congratulate NASA astronaut Peggy Whitson for her record-breaking stay aboard the International Space Station. (Photo Credit: NASA/Robert Markowitz)

Expedition 42 EVA Preview Briefing with Tomas Gonzalez-Torres, Expedition 42 Lead Flight Director; Karina Eversley, U.S. EVA 29 Spacewalk Officer; Sarah Koronia, U.S. EVA 30 Spacewalk Officer; and Art Thomason, U.S. EVA 31 Spacewalk Officer. Photo Date: February 18, 2015. Location: Bldg. 2N, Press Conf. Room. Photographer: Robert Markowitz

jsc2018e095914 (November 7, 2018) --- 2017 NASA astronaut candidate Kayla Barron is helped into a spacesuit prior to underwater spacewalk training at NASA Johnson Space Center’s Neutral Buoyancy Laboratory in Houston. Photo Credit: (NASA/Robert Markowitz)

jsc2018e067953 (Aug. 2, 2018) --- NASA astronauts Josh Cassada (left) and Suni Williams pose for a portrait in front of the Boeing CST-100 Starliner Commercial Crew vehicle mock up at NASA's Johnson Space Center in Houston, Texas.

jsc2018e076666 (Aug. 23, 2018) --- Vice President Mike Pence and NASA Administrator Jim Bridenstine visit the Sonny Carter Training Center (Neutral Buoyancy Lab) at NASA’s Johnson Space Center on Aug. 23, 2018. Pence and Bridenstine spoke with astronaut Suni Williams, and astronaut candidates Jonny Kim, Warren "Woody" Hoburg and Loral O’Hara poolside. While in the Test Control Room, they joined Flight Operations Director Brian Kelly and talked with astronauts Victor Glover and Nicole Mann as they practiced spacewalk tasks underwater.

NASA exhibits on display at Super Bowl - NFL Live Event at Discovery Green. Photo Date: January 26, 2017. Location: Discovery Green - Houston, TX. Photographer: Robert Markowitz

jsc2017e049159 (April 24, 2017) --- Flight Director Brian Smith, Capcom Astronaut Jessica Meir along with Astronaut Jeff Williams monitor activities in Mission Control as President Donald Trump, First Daughter Ivanka Trump and NASA astronaut Kate Rubins make a special Earth-to-space call from the Oval Office to personally congratulate NASA astronaut Peggy Whitson for her record-breaking stay aboard the International Space Station. (Photo Credit: NASA/Robert Markowitz)

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.

Expedition 45/46 Commander, Astronaut Scott Kelly along with his brother, former Astronaut Mark Kelly speak to news media outlets about Scott Kelly's 1-year mission aboard the International Space Station. Photo Date: January 19, 2015. Location: Building 2. Photographer: Robert Markowitz

jsc2018e067956 (Aug. 2, 2018) --- NASA astronauts Bob Behnken (left) and Doug Hurley pose for a portrait in front of the SpaceX Dragon Commercial Crew vehicle mock up at NASA's Johnson Space Center in Houston, Texas.

jsc2018e003257 (Jan. 31, 2018) --- The lunar eclipse "Blood Moon" was photographed from the Johnson Space Center in Houston, Texas during sunrise on Jan. 31, 2018. Credit: NASA/Robert Markowitz

jsc2018e076664 (Aug. 23, 2018) --- Vice President Mike Pence and NASA Administrator Jim Bridenstine visit the Sonny Carter Training Center (Neutral Buoyancy Lab) at NASA’s Johnson Space Center on Aug. 23, 2018. Pence and Bridenstine spoke with astronaut Suni Williams, and astronaut candidates Jonny Kim, Warren "Woody" Hoburg and Loral O’Hara poolside. While in the Test Control Room, they joined Flight Operations Director Brian Kelly and talked with astronauts Victor Glover and Nicole Mann as they practiced spacewalk tasks underwater.

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.

NASA exhibits on display at Super Bowl - NFL Live Event at Discovery Green. Photo Date: January 26, 2017. Location: Discovery Green - Houston, TX. Photographer: Robert Markowitz

jsc2018e067954 (Aug. 2, 2018) --- NASA astronauts (from left) Bob Behnken, Doug Hurley, Mike Hopkins and Victor Glover pose for a portrait in front of the SpaceX Dragon Commercial Crew vehicle mock up at NASA's Johnson Space Center in Houston, Texas.

jsc2018e095900 (November 7, 2018) --- 2017 NASA astronaut candidate Kayla Barron is helped into a spacesuit prior to underwater spacewalk training at NASA Johnson Space Center’s Neutral Buoyancy Laboratory in Houston. Photo Credit: (NASA/Robert Markowitz)

jsc2018e003251 (Jan. 31, 2018) --- The lunar eclipse "Blood Moon" was photographed from the Johnson Space Center in Houston, Texas, during the early morning hours of Jan. 31, 2018. Credit: NASA/Robert Markowitz

jsc2018e095903 (November 7, 2018) --- 2017 NASA astronaut candidate Jonny Kim wears a spacesuit prior to underwater spacewalk training at NASA Johnson Space Center’s Neutral Buoyancy Laboratory in Houston. Photo Credit: (NASA/Robert Markowitz)

Documentation taken of SpaceX Crew 1 astronauts Mike Hopkins and Victor Glover during ISS EVA MAINT 8 training at NBL pool topside.

jsc2019e022267 (3/8/2019) --- Seeker and its communication link, called Kenobi CubeSat Vehicles. Seeker is an automated extravehicular free-flying inspector CubeSat. The primary objective of the Seeker mission is to demonstrate a path toward an inspection capability for future crewed space missions. The Seeker investigation flies the robot on basic maneuvers to take high-resolution images of the Cygnus resupply vehicle after it leaves the International Space Station (ISS).

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.

jsc2018e003200 (Jan. 31, 2018) --- The lunar eclipse "Blood Moon" was photographed from the Johnson Space Center in Houston, Texas, during the early morning hours of Jan. 31, 2018. Credit: NASA/Robert Markowitz

jsc2018e003246 (Jan. 31, 2018) --- The lunar eclipse "Blood Moon" was photographed from the Johnson Space Center in Houston, Texas, during the early morning hours of Jan. 31, 2018. Credit: NASA/Robert Markowitz

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.

jsc2018e009094 (February 21, 2018) --- 2017 NASA astronaut candidates Warren Hoburg, Zena Cardman, Frank Rubio, and Kayla Barron latch on to each other during a reduced gravity flight aboard Canadian Space Agency’s Dassault Falcon 20 Jet. Photo Credit: (NASA/Robert Markowitz)

jsc2018e095892 (Nov. 7, 2018) --- NASA astronaut candidate Kayla Barron participates in spacewalk training at the Neutral Buoyancy Laboratory at NASA's Johnson Space Center in Houston, Texas.

jsc2018e076665 (Aug. 23, 2018) --- Vice President Mike Pence and NASA Administrator Jim Bridenstine visit the Sonny Carter Training Center (Neutral Buoyancy Lab) at NASA’s Johnson Space Center on Aug. 23, 2018. Pence and Bridenstine spoke with astronaut Suni Williams, and astronaut candidates Jonny Kim, Warren "Woody" Hoburg and Loral O’Hara poolside. While in the Test Control Room, they joined Flight Operations Director Brian Kelly and talked with astronauts Victor Glover and Nicole Mann as they practiced spacewalk tasks underwater.

jsc2017e126052 (Oct. 17, 2017) --- NASA astronaut Jeanette Epps trains in a U.S. spacesuit at NASA's Johnson Space Center.

Expedition 43 flight control team with Flight Director Gary Horlacher during the release of SpaceX Dragon cargo vehicle. Photo Date: May 21, 2015. Location: Building 30 - FCR1. Photographer: Robert Markowitz

jsc2019e040195 (July 18, 2019) --- Apollo alumni and NASA employees came together on July 18th at Johnson Space Center's Gilruth Center in Houston for an evening of meeting, mingling, and memorabilia celebrating the 50th anniversary of Apollo 11 and the entire Apollo program.

Spacesuit engineers demonstrate how four crew members would be arranged for launch inside the Orion spacecraft, using a mockup of the vehicle at Johnson Space Center in Houston on Oct. 24, 2014. Part of Batch image transfer from Flickr.

jsc2018e095924 (November 7, 2018) --- 2017 NASA astronaut candidate Jonny Kim prepares for underwater spacewalk training at NASA Johnson Space Center’s Neutral Buoyancy Laboratory in Houston. Photo Credit: (NASA/Robert Markowitz)

jsc2018e003243 (Jan. 31, 2018) --- The lunar eclipse "Blood Moon" was photographed from the Johnson Space Center in Houston, Texas, during the early morning hours of Jan. 31, 2018. Credit: NASA/Robert Markowitz

iss059-s-002 (Dec. 13, 2018) --- The official Expedition 59 crew portrait with (from left) astronauts David Saint-Jacques of the Canadian Space Agency and Anne McClain of NASA; cosmonauts Oleg Konenenko and Oleg Shkripochka of Roscosmos; and NASA astronauts Nick Hague and Christina Koch. Credit: NASA/Robert Markowitz