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NASA’s SpaceX Crew-2 Departs International Space Station

Four astronauts from the mission undocked from the International Space Station in the Crew Dragon capsule and headed back to Earth after spending about half a year in space.

“Towards the screen a little bit is the Node 2 Hatch — Node 2 Zenith or space-facing hatch. That’s the third hatch that will be closed. And then about a kilometer away — ” “The ISO valve is open.” “Awesome” “SpaceX copies, hatch closed and PVRV ISO valve is in the expected position.” “That was confirmed physical separation at 1:05 p.m. Central time as the station was flying 259 statute miles off the coast of Chile.” “But we are going to clear the onboard DragonEye 1 and DragonEye-like sensor cross check alerts from your board. They are no longer active.” “Yeah, so this is a live view from Dragon, and there’s that shot inside the cabin. Pilot Megan McArthur on the right-hand side, Commander Shane Kimbrough on the left-hand side, and that’s Thomas Pesquet, basically the designated professional photographer of this mission. The tiny light there in the center of the dark circle, that is the window in which Thomas is utilizing to take photos during the fly-around.”

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Four astronauts from the mission undocked from the International Space Station in the Crew Dragon capsule and headed back to Earth after spending about half a year in space.CreditCredit…SpaceX, via Agence France-Presse — Getty Images

After Crew Dragon undocked from the space station on Monday, it began a roughly eight-hour trip back to Earth. The capsule, traveling at about 17,000 miles per hour, has been orbiting Earth as it uses a set of small onboard thrusters to dip itself lower toward the atmosphere.

The action starts on Monday night, roughly an hour before splashdown, when Crew Dragon will begin to skim the edge of Earth and space and fire its onboard thrusters for about 10 minutes. Then it will make its decisive plunge into the atmosphere, the riskiest part of any mission besides launch. The process is fully autonomous; the astronauts stay in the seats for what past crews have described as a jarring, turbulent ride.

During this stage of the trip, which is called atmospheric re-entry, Crew Dragon’s outer shell will hit temperatures of up to 3,500 degrees Fahrenheit. The astronauts inside will stay cool with the help of an air conditioning system. A sheath of plasma will form around the speeding capsule and cut off communications with ground control for a few minutes before the spacecraft slows to descent speeds of about 350 miles per hour.

Then, effectively slamming on the brakes, a set of two parachutes will deploy to slow the capsule further, jolting the crew inside. Small explosive devices will detach those parachutes just before another set of four bigger chutes unfurl, reducing the capsule’s speed to roughly 15 miles per hour.

The capsule is expected to splashdown off the coast of Pensacola, Fla., in the Gulf of Mexico at around 10:33 p.m. The crew’s return had been delayed several times over bad weather, but for Monday night, “the weather right now at Pensacola is looking fantastic,” said Gary Jordan, a NASA spokesman, of the forecasts.

Four astronauts from NASA’s Crew-2 mission left the International Space Station on Monday. They donned their spacesuits, buckled into a Crew Dragon capsule built by SpaceX and then undocked from the space station at 2:05 p.m. Eastern time on Monday.

The return trip will last just over eight hours in total, with the water landing of the capsule, which is nicknamed Endeavour, expected at roughly 10:33 p.m. Eastern time on Monday.

NASA has been streaming live coverage of the journey that will continue until shortly after the capsule’s splashdown.

Shortly before undocking, NASA and SpaceX chose an area near Pensacola, Fla., for Crew Dragon’s splashdown zone. It is one of seven different locations in the waters around the Florida peninsula where the capsule can land, and NASA picks whichever area has the most favorable weather. Clear skies, calm seas and gentle winds are prime conditions for a space taxi splashdown.

Since astronauts started flying in the SpaceX capsule in May 2020, two crews have landed in the Gulf of Mexico near the Florida Panhandle. A third returned in the Atlantic Ocean near Kennedy Space Center in Cape Canaveral, Fla.

Kenneth Chang

From left, the astronauts Thomas Pesquet of the E.S.A.; Megan McArthur and Shane Kimbrough of NASA; and Akihiko Hoshide of JAXA, during a dress rehearsal for the Crew-2 mission launch.Credit…Aubrey Gemignani/NASA

Two NASA astronauts, plus one astronaut from Japan and another from France, will cap their nearly 200-day stay on the space station, a mission that was known as Crew-2.

Akihiko Hoshide of JAXA, the Japanese space agency. Mr. Hoshide, 52, had made two previous trips to space. He was a member of the crew of the space shuttle Discovery in 2008, and in 2012 he spent four months on the space station.

Shane Kimbrough of NASA. Mr. Kimbrough, 53, is the commander of Crew-2. He also made two earlier trips to space, once on the space shuttle Endeavour in 2008 and then spending more than six months on the space station from October 2016 to April 2017.

K. Megan McArthur of NASA. Dr. McArthur, 49, is the mission’s pilot and previously flew on the space shuttle Atlantis in May 2009 on the last mission to refurbish and upgrade the Hubble Space Telescope. During that mission, Dr. McArthur, an oceanographer by training, operated the shuttle’s robotic arm to grab the telescope and place it in the cargo bay.

Dr. McArthur is married to Bob Behnken, one of the astronauts who traveled on the first astronaut flight of the same SpaceX capsule last year. She will sit in the seat he occupied during that flight.

Thomas Pesquet of the European Space Agency. Mr. Pesquet, 43, previously spent six months on the space station from November 2016 to June 2017, overlapping with Mr. Kimbrough for most of his stay. He is from France. Most recently, Mr. Pesquet has served as the space station’s commander.

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