iss062e147663 (4/12/2020) --- A view taken during candid shots in Japanese Experiment Module (JEM) aboard the International Space Station (ISS) during PAO event. Astronaut Drew Morgan, in his blue flight suit, participates in the event. He is holding a sign that reads NASA.gov/NASAatHome. He is joined by astronaut Christopher Cassidy holding a sign that reads Spot the station.NASA.gov.

STS-127 Commander Mark Polansky, at podium, speaks to White House interns at the Eisenhower Executiive Office Building in Washington, Thursday, Sept. 24, 2009. Seated from left are crew members Christopher Cassidy, David Wolf, Julie Payette, Douglas Hurley and Thomas Marshburn. Photo Credit: (NASA/Paul E. Alers)

STS-127 Commander Mark Polansky, at podium, speaks to White House interns at the Eisenhower Executiive Office Building in Washington, Thursday, Sept. 24, 2009. Seated from left are crew members Christopher Cassidy, David Wolf, Julie Payette, Douglas Hurley and Thomas Marshburn. Photo Credit: (NASA/Paul E. Alers)

STS-127 Commander Mark Polansky, at podium, speaks to White House interns at the Eisenhower Executiive Office Building in Washington, Thursday, Sept. 24, 2009. Seated from left are crew members Christopher Cassidy, David Wolf, Douglas Hurley and Thomas Marshburn. Photo Credit: (NASA/Paul E. Alers)

NASA Administrator Charles Bolden, left, welcomes home STS-127 Astronauts Dave Wolf, and Christopher Cassidy, right, shortly after the space shuttle Endeavour and its crew landed, Friday, July 31, 2009 at NASA's Kennedy Space Center in Cape Canaveral, Fla., completing a 16-day journey of more than 6.5 million miles. Endeavour delivered the final segment to the Japan Aerospace Exploration Agency's Kibo laboratory and a new crew member to the International Space Station.

Canadian Space Agency astronaut Julie Payette, a mission specialist on STS-127, at podium, speaks to White House interns at the Eisenhower Executiive Office Building in Washington, Thursday, Sept. 24, 2009. Seated from left are crew members Christopher Cassidy, David Wolf, Mark Polansky, Douglas Hurley and Thomas Marshburn. Photo Credit: (NASA/Paul E. Alers)

STS-127 Commander Mark Polansky, standing left, talks about the recent mission to White House interns at the Eisenhower Executiive Office Building in Washington, Thursday, Sept. 24, 2009. Seated from left are crew members Julie Payette, Christopher Cassidy, David Wolf, Douglas Hurley and Thomas Marshburn. Photo Credit: (NASA/Paul E. Alers)

STS-127 Commander Mark Polansky, at podium, and crew member David Wolf, standing right, answer questions from White House interns at the Eisenhower Executiive Office Building in Washington, Thursday, Sept. 24, 2009. Seated from left are crew members Christopher Cassidy, Douglas Hurley and Thomas Marshburn. Photo Credit: (NASA/Paul E. Alers)

STS-127 shuttle mission crew members from left, Commander Mark Polansky, Pilot Doug Hurley, Mission Specialists Christopher Cassidy, Tom Marshburn, Dave Wolf and Julie Payette of the Canadian Space Agency, give a presentation at the NASA Tweetup event held at NASA Headquarters, September 24, 2009 in Washington. The NASA Tweetup featured a presentation and a question and answer session with the crew of the STS-127 shuttle mission to install new hardware and expand the Japanese Kibo laboratory on the International Space Station. Photo Credit: (NASA/Carla Cioffi)

JOHNSON SPACE CENTER, Houston -- JSC2008-E-137661 (3 Oct. 2008) --- Astronaut Christopher J. Cassidy, mission specialist

S127-E-007954 (22 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, participates in Endeavour's third space walk of a scheduled five overall for this flight. This was Cassidy's first of a scheduled three sessions for him. Astronaut Dave Wolf, Cassidy's EVA colleague, is out of frame.

S127-E-007983 (22 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, participates in Endeavour's third space walk of a scheduled five overall for this flight. This was Cassidy's first of a scheduled three sessions for him. Astronaut Dave Wolf, Cassidy's EVA colleague, partially visible at right.

S127-E-007938 (22 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, participates in Endeavour's third space walk of a scheduled five overall for this flight. This was Cassidy's first of a scheduled three sessions for him. Astronaut Dave Wolf, Cassidy's EVA colleague, is out of frame.

S127-E-006592 (17 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, on Endeavour's flight deck during flight day three.

S127-E-006600 (17 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, on Endeavour's flight deck during flight day three.

S127-E-007786 (22 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, is pictured in the lower right corner of this wide shot photographed during Endeavour's third space walk of a scheduled five overall for this flight. Cassidy is near the Japanese Experiment Module - Exposed Facility (JEF) This was Cassidy's first of a scheduled three sessions for him. Astronaut Dave Wolf, Cassidy's EVA colleague, is out of frame.

S127-E-007973 (22 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, participates in Endeavour's third space walk of a scheduled five overall for this flight. Cassidy is working with the Integrated Cargo Carrier. This was Cassidy's first of a scheduled three sessions for him. Astronaut Dave Wolf, Cassidy's EVA colleague, is out of frame.

S127-E-007984 (22 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, is pictured in the center of this wide shot photographed during Endeavour's third space walk of a scheduled five overall for this flight. Cassidy is near the Japanese Experiment Module - Exposed Facility (JEF). This was Cassidy's first of a scheduled three sessions for him. Astronaut Dave Wolf, Cassidy's EVA colleague, is out of frame.

S127-E-007801 (22 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, is pictured in the center of this wide shot photographed during Endeavour's third space walk of a scheduled five overall for this flight. Cassidy is near The Japanese Experiment Module - Exposed Facility (JEF.) This was Cassidy's first of a scheduled three sessions for him. Astronaut Dave Wolf, Cassidy's EVA colleague, is out of frame.

S127-E-007692 (22 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, prepares to participate in Endeavour's third space walk of a scheduled five overall for this flight.

S127-E-006588 (17 July 2009) --- From the left, astronauts Christopher Cassidy, Tim Kopra and Doug Hurley are pictured on the flight deck of the Space Shuttle Endeavour during flight day three activities.

S127-E-006352 (16 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, looks through an overhead window on the aft flight deck of Space Shuttle Endeavour during flight day two activities.

S127-E-006343 (16 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, is pictured on the middeck of Space Shuttle Endeavour during flight day two activities.

S127-E-006345 (16 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, works on the middeck of Space Shuttle Endeavour during flight day two activities.

ISS020-E-024129 (22 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, is pictured during the third spacewalk for the joint shuttle-station crewmembers currently aboard the International Space Station.

ISS020-E-023974 (24 July 2009) --- This is a close-up view of the helmet visor of astronaut Christopher Cassidy during his second spacewalk on July 24. Seen mirrored in the visor is astronaut Tom Marshburn, with whom Cassidy will team again on July 27 for the STS-127 crew's fifth and final session of extravehicular activity. Eleven astronauts and cosmonauts remained inside the International Space Station and the shuttle to which it was docked, while the two suited astronauts continued work on the orbital outpost.

S127-E-007079 (29 July 2009) --- Astronaut Christopher Cassidy is pictured on the flight deck of the Space Shuttle Endeavour during the July 20 spacewalk of astronauts Dave Wolf and Tom Marshburn. Cassidy, Wolf and Marshburn, all three mission specialists, are part of a 13-member station population for now -- an aggregation made up of seven shuttle astronauts and six Expedition 20 crew members.

ISS020-E-025693 (27 July 2009) --- Attired in his Extravehicular Mobility Unit (EMU) spacesuit, astronaut Christopher Cassidy, STS-127 mission specialist, is pictured in the Quest Airlock of the International Space Station as the mission's fifth and final session of extravehicular activity (EVA) draws to a close. Astronaut Michael Barratt, Expedition 20 flight engineer, photographs the EMU gloves worn by Cassidy while Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, mission specialist, assists with the doffing of the spacesuit.

S127-E-007251 (20 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, watches a checklist for extravehicular activity float in front of him on Endeavour's flight deck. Cassidy was inside the cabin supporting the spacewalk of two crewmates on July 20, but he just may have been anticipating his own first spacewalk in two days.

JSC2008-E-139781 (12 Nov. 2008) --- Astronaut Christopher Cassidy, STS-127 mission specialist, dons a training version of his shuttle launch and entry suit in preparation for a training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center. United Space Alliance (USA) suit technician Steve Sholtz assisted Cassidy.

S127-E-011291 (28 July 2009) --- Astronauts Tom Marshburn (left) and Christopher Cassidy, both STS-127 mission specialists, look through an overhead window on the aft flight deck of Space Shuttle Endeavour during flight day 14 activities. Cassidy is holding a handheld laser ranging device -- designed to measure the range between two spacecraft.

ISS020-E-021854 (18 July 2009) --- Astronauts Dave Wolf (right) and Tim Kopra (center) are suited and just about ready to exit the International Space Station's Quest airlock to begin the first of five scheduled spacewalks over the next several days. Astronaut Christopher Cassidy, foreground, assists Kopra with his backpack. When Wolf, Cassidy and five other astronauts return to Earth in the Space Shuttle Endeavour, Kopra will stay behind to serve a tour of duty on the orbital outpost.

S127-E-007252 (20 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, watches a checklist for extravehicular activity float in front of him on Endeavour's flight deck. Cassidy was inside the cabin supporting the spacewalk of two crewmates on July 20, but he just may have been anticipating his own first spacewalk in two days.

S127-E-006967 (19 July 2009) --- Astronauts Christopher Cassidy (left), Dave Wolf (right)and Tom Marshburn (bottom), all STS-127 mission specialists, share a moment shaking hands with one another on the mid deck of the Space Shuttle Endeavour. Tomorrow Wolf and Marshburn will share more than a few moments performing a spacewalk to perform work on the adjoined International Space Station. Then on flight day 10, Marshburn and Cassidy will perform the fourth of five scheduled space walks.

S127-E-006972 (19 July 2009) --- On Endeavour's mid deck, astronauts Christopher Cassidy (left) and Dave Wolf, both STS-127 mission specialists, may be talking over their upcoming shared space walk, scheduled for flight day 8. The extravehicular activity they share will be the third and final EVA session in a week's time for Wolf and it will be the first of three for Cassidy.

S127-E-011166 (28 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, uses a handheld laser ranging device -- designed to measure the range between two spacecraft -- through one of the overhead windows on the aft flight deck of Space Shuttle Endeavour after undocking from the International Space Station.

S127-E-006556 (17 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, is at the controls on the aft flight deck of the Space Shuttle Endeavour during rendezvous and docking activities between the shuttle and the International Space Station.

S127-E-008877 (26 July 2009) --- Astronauts Tom Marshburn (left) and Christopher Cassidy, both STS-127 mission specialists, work with extravehicular activity (EVA) tools in the Quest airlock of the International Space Station while Space Shuttle Endeavour remains docked with the station.

S127-E-007700 (22 July 2009) --- Astronaut Dave Wolf, STS-127 mission specialist, is seconds away from egressing the International Space Station to begin his third spacewalk of the current mission. Astronaut Christopher Cassidy, mission specialist, whose feet and backpack are visible, was about to make his initial spacewalk.

S127-E-006645 (17 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, on Endeavour's flight deck, uses a range finding device to determine distance between the shuttle and the International Space Station during rendezvous and docking activities on flight day 3.

JSC2008-E-124033 (20 Oct. 2008) --- Astronaut Christopher Cassidy, STS-127 mission specialist, attired in a training version of his Extravehicular Mobility Unit (EMU) spacesuit, awaits the start of a training session in the waters of the Neutral Buoyancy Laboratory (NBL) near NASA's Johnson Space Center.

S127-E-007978 (22 July 2009) Astronauts Christopher Cassidy (left) and Dave Wolf work with the Integrated Cargo Carrier-VLD, as they remove and replace batteries on the P6 truss during STS-127's third session of extravehicular activity.

S127-E-007698 (22 July 2009) --- Astronaut Mike Barratt, Expedition 20 flight engineer, assumes a waiting stance in the International Space Station's Quest airlock while assisting astronauts Dave Wolf and Christopher Cassidy in getting ready for the mission's third space walk to perform work on the orbital outpost.

JSC2008-E-124034 (20 Oct. 2008) --- Astronaut Christopher Cassidy, STS-127 mission specialist, gets help with the donning of a training version of his Extravehicular Mobility Unit (EMU) spacesuit in preparation for a training session in the waters of the Neutral Buoyancy Laboratory (NBL) near NASA's Johnson Space Center.

S127-E-008922 (26 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, works with extravehicular activity (EVA) equipment in the Quest airlock of the International Space Station while Space Shuttle Endeavour remains docked with the station.

ISS020-E-023362 (22 July 2009) --- Astronaut Christopher Cassidy waves toward his spacewalking colleague, astronaut Dave Wolf, during the third session of extravehicular activity for the STS-127 crew to perform work, in cooncert with the Expedition 20 crew on the International Space Station.

S127-E-007704 (22 July 2009) --- Astronaut Mike Barratt, Expedition 20 flight engineer, looks at astronaut Dave Wolf through the hatch window just after "sending off" astronauts Wolf and Christopher Cassidy (out of frame) for Endeavour's third space walk of a scheduled five overall for this flight.

S127-E-007708 (22 July 2009) --- Astronaut Mike Barratt, Expedition 20 flight engineer, looks at astronaut Dave Wolf through the hatch window just after "sending off" astronauts Wolf and Christopher Cassidy (out of frame) for Endeavour's third space walk of a scheduled five overall for this flight.

JSC2008-E-139792 (12 Nov. 2008) --- Astronaut Christopher Cassidy, STS-127 mission specialist, attired in a training version of his shuttle launch and entry suit, awaits the start of a training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center.

S127-E-008488 (25 July 2009) --- From the left, astronauts Mark Polansky (partially out of frame), STS-127 commander, Doug Hurley, pilot, and Christopher Cassidy, mission specialist, take some leisure time on the mid deck of the Space Shuttle Endeavour while it is linked up to the International Space Station.

S127-E-007694 (22 July 2009) --- Astronaut Dave Wolf, STS-127 mission specialist, is just about ready to participate in Endeavour's third space walk of a scheduled five overall for this flight. He joined astronaut Christopher Cassidy STS-127 mission specialist, for the session.

S127-E-008871 (26 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, works with extravehicular activity (EVA) tools in the Quest airlock of the International Space Station while Space Shuttle Endeavour remains docked with the station.

JSC2008-E-047939 (19 June 2008) --- NASA astronaut Christopher J. Cassidy and Canadian Space Agency astronaut Julie Payette, both STS-127 mission specialists, participate in a food tasting session in the Flight Projects Division Laboratory at NASA's Johnson Space Center.

ISS020-E-023826 (24 July 2009) --- Astronaut Dave Wolf assists astronaut Tom Marshburn with some final touches on his extravehicular mobility unit spacesuit in the joint airlock, while astronaut Christopher Cassidy stands suited and almost ready at right. Marshburn and Cassidy were about to participate in the July 24 flight day 10 spacewalk. They are scheduled to wrap up the EVA work with a fifth overall session on July 27. The three mission specialists are part of a 13-member aggregation of astronauts and cosmonauts currently onboard the orbital outpost while its crew of six plays host to Endeavour's crew of seven.

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, STS-127 Mission Specialist Christopher Cassidy is checking the fit of his launch-and-entry suit in preparation for space shuttle Endeavour's launch on June 13 to the International Space Station. Cassidy will be making his first shuttle flight. Endeavour will deliver the Japanese Experiment Module's Exposed Facility, or JEM-EF, and the Experiment Logistics Module-Exposed Section, or ELM-ES, on STS-127. The mission is the final of three flights dedicated to the assembly of the Japan Aerospace Exploration Agency's Kibo laboratory complex on the space station. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, STS-127 Mission Specialist Christopher Cassidy checks his gloves during fit-check of his launch-and-entry suit in preparation for space shuttle Endeavour's launch on June 13 to the International Space Station. Cassidy will be making his first shuttle flight. Endeavour will deliver the Japanese Experiment Module's Exposed Facility, or JEM-EF, and the Experiment Logistics Module-Exposed Section, or ELM-ES, on STS-127. The mission is the final of three flights dedicated to the assembly of the Japan Aerospace Exploration Agency's Kibo laboratory complex on the space station. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility, STS-127 Mission Specialist Christopher Cassidy, at microphone, addresses the media and those on hand to welcome the STS-127 crew to NASA's Kennedy Space Center in Florida. Cassidy and the other members of the crew arrived from Houston aboard the Shuttle Training Aircraft in the background to get ready for launch on space shuttle Endeavour on June 13. From left are Mission Specialists Tim Kopra, Julie Payette of the Canadian Space Agency, and Tom Marshburn; Mission Specialist Christopher Cassidy; Commander Mark Polansky; Pilot Doug Hurley; and Mission Specialist Dave Wolf. The STS-127 mission is the final of three flights dedicated to the assembly of the Japan Aerospace Exploration Agency's Kibo laboratory complex on the International Space Station. Endeavour will deliver the Japanese Experiment Module's Exposed Facility, or JEM-EF, and the Experiment Logistics Module-Exposed Section, or ELM-ES, to the space station on STS-127. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – At the Shuttle Landing Facility, STS-127 Mission Specialist Christopher Cassidy is greeted by the media and others on hand to welcome the STS-127 crew to NASA's Kennedy Space Center in Florida. Cassidy and the other members of the crew arrived from Houston aboard a Shuttle Training Aircraft to get ready for launch on space shuttle Endeavour on June 13. Cassidy, a commander in the U.S. Navy, is a former Navy SEAL and is making his first shuttle flight. The STS-127 mission is the final of three flights dedicated to the assembly of the Japan Aerospace Exploration Agency's Kibo laboratory complex on the International Space Station. Endeavour will deliver the Japanese Experiment Module's Exposed Facility, or JEM-EF, and the Experiment Logistics Module-Exposed Section, or ELM-ES, to the space station on STS-127. Photo credit: NASA/Kim Shiflett

S127-E-007335 (20 July 2009) --- Two members of the flight day six spacewalk crew--the second one of five scheduled for the joint aggregation of shuttle and space station crewmembers--go through the final touches on the donning of their spacesuits prior to egressing the joint airlock of the orbital outpost. Suited astronauts Dave Wolf (left) and Tom Marshburn (right)are assisted by astronauts Mike Barratt (center frame), Expedition 20 flight engineer, and Christopher Cassidy (bottom), STS-127 mission specialist.

ISS020-E-021875 (18 July 2009) --- Astronaut Dave Wolf (back to camera) calls on a crewmember from the Space Shuttle Endeavour and another from the International Space Station's current crew to complete final touches on his space suit. Astronaut Mike Barratt, Expedition 20 flight engineer, is at frame bottom, and astronaut Christopher Cassidy, STS-127 mission specialist, is near the top. Wolf was about to participate in the first of five overall sessions of extravehicular activity scheduled over the next several days.

S127-E-008441 (24 July 2009) --- Astronauts Tom Marshburn (left) and Christopher Cassidy, mission specialists for STS-127, share duties on the fourth spacewalk of Endeavour's current mission and its crew's joint activities with the space station. Eleven astronauts and cosmonauts remained inside the International Space Station and the shuttle to which it was docked, while the two continued work on the orbital outpost. The two will team up for the mission's final spacewalk on July 27.

ISS020-E-023835 (24 July 2009) --- Astronauts Tom Marshburn (left) and Christopher Cassidy stand suited and almost ready to participate in the July 24 flight day 10 spacewalk. The two are scheduled to wrap up the EVA work with a fifth overall session on July 27. The mission specialists are part of a 13-member aggregation of astronauts and cosmonauts currently onboard the orbital outpost while its crew of six plays host to Endeavour's crew of seven.

S127-E-008440 (24 July 2009) --- Astronauts Tom Marshburn (upper left) and Christopher Cassidy (seen just below Marshburn), mission specialists for STS-127, share duties on the fourth spacewalk of Endeavour's current mission and its crew's joint activities with the space station. Eleven astronauts and cosmonauts remained inside the International Space Station and the shuttle to which it was docked, while the two continued work on the orbital outpost. The two will team up for the mission's final spacewalk on July 26.

ISS020-E-023822 (24 July 2009) ---Astronaut Christopher Cassidy stands suited and almost ready to participate in the July 24 flight day 10 spacewalk. He and astronaut Tom Marshburn (out of frame) are also scheduled to wrap up the EVA work with a fifth overall session on July 27. The two mission specialists are part of a 13-member aggregation of astronauts and cosmonauts currently onboard the orbital outpost while its crew of six plays host to Endeavour's crew of seven.

S127-E-007705 (22 July 2009) --- Astronaut Tim Kopra, Expedition 20 flight engineer, looks over a checklist while assisting the spacewalk preparations of astronauts Dave Wolf and Christopher Cassidy (both out of frame) onboard the International Space Station. This was the third of five scheduled sessions of extravehicular activity to continue work on the orbital outpost.

S127-E-008370 (24 July 2009) --- While astronauts Tom Marshburn and Christopher Cassidy (both out of frame), made their spacewalk on July 24, the two mission specialists and the crews of STS-127 and the International Space Station's Expedition 20, were able to enjoy scenes such as this one of one of the orbital outpost's solar panels intersecting Earth's horizon. Eleven astronauts and cosmonauts remained inside the International Space Station and the shuttle to which it was docked, while the two suited astronauts continued work on the orbital outpost.

S127-E-006705 (17 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, peers through a window in the hatch that separates seven Endeavour crew members from six International Space Station inhabitants. But the separation wasn't for long, as soon afterward the hatch was opened and the visitors from Earth moved onto the station to set the population record at 13. More importantly, over a week's worth of joint activities lies ahead for the two crews.

ISS020-E-023351 (22 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, handles the Japanese Experiment Module - Exposed Facility, which has been a major subject of attention by the joint crews aboard the International Space Station, currently docked with the Space Shuttle Endeavour. Flight day 8 on July 22 saw both hands-on and robotics work with the new hardware.

S127-E-008455 (24 July 2009) --- Astronauts Christopher Cassidy (left) and Tom Marshburn, mission specialists for STS-127, share duties on the fourth spacewalk of Endeavour's current mission and its crew's joint activities with the space station. Eleven astronauts and cosmonauts remained inside the International Space Station and the shuttle to which it was docked, while the two continued work on the orbital outpost. The two will team up for the mission's final spacewalk on July 27.

CAPE CANAVERAL, Fla. –STS-127 crew members autograph mementos for attendees following a presentation about the astronauts' experiences on the mission. Seated from left are Mission Specialist Christopher Cassidy, Pilot Doug Hurley and Commander Mark Polansky. The STS-127 mission was the final of three flights dedicated to the assembly of the Japanese Kibo laboratory complex on the International Space Station. The crew launched on space shuttle Endeavour on July 15 and returned July 31. Photo credit: NASA/Jim Grossmann

ISS020-E-023821 (24 July 2009) ---Astronaut Tom Marshburn stands suited and almost ready to participate in the July 24 flight day 10 spacewalk. He and astronaut Christopher Cassidy (out of frame) are also scheduled to wrap up the EVA work with a fifth overall session on July 27. The two mission specialists are part of a 13-member aggregation of astronauts and cosmonauts currently onboard the orbital outpost while its crew of six plays host to Endeavour's crew of seven.

ISS020-E-024004 (24 July 2009) --- This is a close-up view of astronaut Tom Marshburn using a power tool during his second spacewalk on July 24. Out of frame is astronaut Christopher Cassidy with whom he'll team again on July 27 for the STS-127 crew's fifth and final session of extravehicular activity. Eleven astronauts and cosmonauts remained inside the International Space Station and the shuttle to which it was docked, while the two suited astronauts continued work on the orbital outpost.

S127-E-006871 (18 July 2009) ---Two soon-to-be space-walking astronauts--Dave Wolf and Tim Kopra--although barely visible in the International Space Station's Quest airlock in the rear of this frame, are the primary focus of the three supportive astronauts in the foreground. From the left are astronauts Christopher Cassidy, Mike Barratt and Tom Marshburn. The July 18 extravehicular activity kicks off a series of five spacewalks scheduled over the next several days.

S127-E-006881 (18 July 2009) --- Onboard Endeavour's forward flight deck, astronaut Christopher Cassidy, STS-127 mission specialist, looks over a reference manual as he plays an intravehicular support role to two space-walking astronauts (Dave Wolf and Tim Kopra), out of frame. The July 18 extravehicular activity kicks off a series of five spacewalks scheduled over the next several days.

S127-E-009751 (28 July 2009) --- Astronauts Mark Polansky (left), STS-127 commander; and Christopher Cassidy, mission specialist, close the hatch on the middeck of Space Shuttle Endeavour prior to undocking from the International Space Station to conclude 11 days of cooperative work onboard the shuttle and the station. Undocking of the two spacecraft occurred at 12:26 p.m. (CDT) on July 28, 2009.

ISS020-E-024163 (24 July 2009) --- Astronauts Mike Barratt (top center), Expedition 20 flight engineer, and Dave Wolf (bottom center), STS-127 mission specialist, assist astronaut Tom Marshburn (left) and Christopher Cassidy following the completion of the fourth spacewalk for the joint shuttle-station crews currently aboard the International Space Station while it is docked to the Space Shuttle Endeavour.

CAPE CANAVERAL, Fla. -- At SPACEHAB in Titusville, Fla., STS-127 Mission Specialist Christopher Cassidy gets a close look at the Pump Module Assembly, part of the payload for the mission. The crew members are at Kennedy for a crew equipment interface test, or CEIT, which provides experience handling tools, equipment and hardware they will use on the mission. The payload will be launched to the International Space Station aboard space shuttle Endeavour on the STS-127 mission, targeted for launch on May 15, 2009. Photo credit: NASA/Dimitrios Gerondidakis

JSC2008-E-122442 (7 Oct. 2008) --- Canadian Space Agency astronaut Julie Payette (foreground), NASA astronaut Christopher Cassidy, both STS-127 mission specialists, and astronaut Doug Hurley (left), pilot, participate in a training session in one of the full-scale trainers in the Space Vehicle Mockup Facility at NASA's Johnson Space Center. Attired in training versions of their shuttle launch and entry suits, the crewmembers are seated on the flight deck for a post insertion/de-orbit training session.

S127-E-006954 (19 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, is pictured on the mid deck of the Space Shuttle Endeavour on a day between two days during which he is assigned support duty for space-walking crewmates. Meanwhile "upstairs" on the flight deck, crewmates are using remote controls and the Canadian-built remote manipulator system (RMS) arm to move the Integrated Cargo Carrier from Endeavour's payload bay.

S127-E-009752 (28 July 2009) --- Astronauts Mark Polansky (left), STS-127 commander; and Christopher Cassidy, mission specialist, close the hatch on the middeck of Space Shuttle Endeavour prior to undocking from the International Space Station to conclude 11 days of cooperative work onboard the shuttle and the station. Undocking of the two spacecraft occurred at 12:26 p.m. (CDT) on July 28, 2009.

S127-E-008463 (24 July 2009) --- Astronauts Tom Marshburn (right) and Christopher Cassidy, mission specialists for STS-127, share duties on the fourth spacewalk of Endeavour's current mission and its crew's joint activities with the space station. Eleven astronauts and cosmonauts remained inside the International Space Station and the shuttle to which it was docked, while the two continued work on the orbital outpost. The two will team up for the mission's final spacewalk on July 27.

ISS020-E-023962 (24 July 2009) --- Astronaut Tom Marshburn makes his second spacewalk on July 24. Out of frame is astronaut Christopher Cassidy with whom he'll team again on July 27 for the STS-127 crew's fifth and final session of extravehicular activity. Eleven astronauts and cosmonauts remained inside the International Space Station and the shuttle to which it was docked, while the two suited astronauts continued work on the orbital outpost.

S127-E-009387 (27 July 2009) --- Attired in his Extravehicular Mobility Unit (EMU) spacesuit, astronaut Christopher Cassidy, STS-127 mission specialist, is pictured in the Quest Airlock of the International Space Station as the mission's fifth and final session of extravehicular activity (EVA) draws to a close. Cosmonaut Roman Romanenko (left), Expedition 20 flight engineer; and Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, mission specialist, assist with the doffing of the spacesuit.

ISS020-E-021867 (18 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, assists astronaut Dave Wolf (partially pictured), mission specialist, with the backpack for his extravehicular mobility unit or space suit prior to airlock egress. Astronauts Wolf and Tim Kopra later completed the first of five scheduled space walks to be spread over the next several days.

CAPE CANAVERAL, Fla. – On Launch Pad 39A at NASA's Kennedy Space Center in Florida, STS-127 Mission Specialist Christopher Cassidy is eager to take part in the simulated launch countdown, which concludes the terminal countdown demonstration test. Endeavour's STS-127 mission is the final of three flights dedicated to the assembly of the Japanese Kibo laboratory complex on the International Space Station. Endeavour's launch is scheduled for June 13 at 7:17 a.m. EDT. Photo credit: NASA/Kim Shiflett

JSC2008-E-047936 (19 June 2008) --- STS-127 crewmembers participate in a food tasting session in the Flight Projects Division Laboratory at NASA's Johnson Space Center. Seated from the left are NASA astronaut Christopher J. Cassidy, Canadian Space Agency astronaut Julie Payette, NASA astronauts David A. Wolf, all mission specialists; Mark L. Polansky, commander; Thomas H. Marshburn, mission specialist; and Douglas G. Hurley, pilot. Dieticians (right foreground) assisted the crewmembers.

S127-E-008456 (24 July 2009) --- Astronauts Tom Marshburn (right) and Christopher Cassidy, mission specialists for STS-127, share duties on the fourth spacewalk of Endeavour's current mission and its crew's joint activities with the space station. Eleven astronauts and cosmonauts remained inside the International Space Station and the shuttle to which it was docked, while the two continued work on the orbital outpost. The two will team up for the mission's final spacewalk on July 27.

S127-E-008459 (24 July 2009) --- Astronauts Tom Marshburn (right) and Christopher Cassidy, mission specialists for STS-127, share duties on the fourth spacewalk of Endeavour's current mission and its crew's joint activities with the space station. Eleven astronauts and cosmonauts remained inside the International Space Station and the shuttle to which it was docked, while the two continued work on the orbital outpost.

ISS020-E-021866 (18 July 2009) --- Astronauts Dave Wolf (in spacesuit with back to camera) and Tim Kopra (out of frame) are suited and just about ready to exit the International Space Station's Quest airlock to begin the first of five scheduled spacewalks over the next several days. The space walkers are assisted here by astronauts Christopher Cassidy (left), STS-127 mission specialist, and Mike Barratt, Expedition 20 flight engineer.

S127-E-008437 (24 July 2009) --- Astronauts Tom Marshburn (partially obscured) and Christopher Cassidy (center frame), mission specialists for STS-127, makes sense out of all the hardware facing them as they share duties on the fourth spacewalk of Endeavour's current mission and its crew's joint activities with the space station. Eleven astronauts and cosmonauts remained inside the International Space Station and the shuttle to which it was docked, while the two continued work on the orbital outpost. The two will team up for the mission's final spacewalk on July 27.

CAPE CANAVERAL, Fla. -- At SPACEHAB in Titusville, Fla., STS-127 Mission Specialists Tom Marshburn and Christopher Cassidy do a glove fitcheck on Pump Module Assembly caps, part of the payload for the mission. The crew members are at Kennedy for a crew equipment interface test, or CEIT, which provides experience handling tools, equipment and hardware they will use on the mission. The payload will be launched to the International Space Station aboard space shuttle Endeavour on the STS-127 mission, targeted for launch on May 15, 2009. Photo credit: NASA/Dimitrios Gerondidakis

S127-E-008464 (24 July 2009) --- Almost lost to the vision among tons of space hardware, astronauts Christopher Cassidy (partially in frame at upper left) and Tom Marshburn, mission specialists for STS-127, share duties on the fourth spacewalk of Endeavour's current mission and its crew's joint activities with the space station. Eleven astronauts and cosmonauts remained inside the International Space Station and the shuttle to which it was docked, while the two continued work on the orbital outpost. The two will team up for the mission's final spacewalk on July 26.

S127-E-008368 (24 July 2009) --- While astronauts Tom Marshburn and Christopher Cassidy (both out of frame), made their spacewalk on July 24, the two mission specialists and the crews of STS-127 and the International Space Station's Expedition 20, were able to enjoy scenes such as this one of one of the orbital outpost's solar panels intersecting Earth's horizon. Eleven astronauts and cosmonauts remained inside the International Space Station and the shuttle to which it was docked, while the two suited astronauts continued work on the orbital outpost.

ISS020-E-025698 (27 July 2009) --- Attired in his Extravehicular Mobility Unit (EMU) spacesuit, astronaut Christopher Cassidy, STS-127 mission specialist; along with cosmonaut Roman Romanenko (left), Expedition 20 flight engineer; and Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, mission specialist, are pictured in the Quest Airlock of the International Space Station as the mission's fifth and final session of extravehicular activity (EVA) draws to a close.

iss062e141209 (4/11/2020) --- A view of the FSL Soft Matter Dynamics - FOAM sample cell in the Columbus module aboard the International Space Station (ISS). FSL Soft Matter Dynamics - Hydrodynamics of Wet Foams (Foam Coarsening)  aims to study aqueous and non-aqueous foams in the microgravity environment of the ISS.

iss063e002679 (April 23, 2020) --- The northern tip of the Middle Eastern nation of Oman is pictured on the Strait of Hormuz. The International Space Station was orbiting above the Persian Gulf when this photograph was taken.

iss063e002730 (April 23, 2020) --- The Rhine–Meuse–Scheldt delta, a river delta in the Netherlands, is pictured from the International Space Station as it orbited off the east coast of England.

iss063e002750 (April 23, 2020) --- The Rhine–Meuse–Scheldt delta, a river delta in the Netherlands, is pictured from the International Space Station as it orbited off the east coast of England.

iss062e141221 (4/11/2020) --- A view of the sample cell inside the Soft Matter Dynamics (SMD) Experiment Container of the Fluid Science Laboratory (FSL) in the Columbus module aboard the International Space Station (ISS). FSL Soft Matter Dynamics - Hydrodynamics of Wet Foams (Foam Coarsening) aims to study aqueous and non-aqueous foams in the microgravity environment of the ISS.

iss063e003768 (April 28, 2020) --- The New York City borough of Staten Island and the New Jersey metropolitan area figure prominently in this image taken from the International Space Station as it orbited above the northeastern United States.