SAN FRANCISCO: The third long-duration astronaut team launched by SpaceX to the International Space Station (ISS) safely returned to Earth early on Friday, splashing down in the Gulf of Mexico off Florida to end months of orbital research.
The SpaceX Crew Dragon capsule dubbed Endurance, carrying three US NASA astronauts and a European Space Agency (ESA) crewmate from Germany, parachuted into calm seas in darkness at the conclusion of a 23-hour-plus autonomous flight home from the ISS.
The Endurance crew, which began its stay in orbit on November 11, consisted of American spaceflight veteran Tom Marshburn, 61, and three first-time astronauts: NASA’s Raja Chari, 44, and Kayla Barron, 34, and their ESA colleague Matthias Maurer, 52.
In less than an hour, the heat-scorched Crew Dragon was hoisted onto a recovery ship before the capsule’s side hatch was opened and the four astronauts were helped out one by one for their first breath of fresh air in nearly six months.
The return from orbit followed a fiery re-entry plunge through Earth’s atmosphere, generating frictional heat that sent temperatures outside the capsule soaring to 3,500 degrees Fahrenheit (1,930 degrees Celsius).
Two sets of parachutes billowed open above the capsule in the final stage of descent, slowing its fall to about 15 miles per hour (24 kph) before the craft hit the water off the coast of Tampa, Florida.
The newly returned astronauts were officially designated as NASA’s “Commercial Crew 3,” the third full-fledged, long-duration team of four that SpaceX has flown to the space station under contract for the US space agency.
Crew 3 returned to Earth with some 550 pounds (250 kg) of cargo, including loads of ISS research samples. Aside from carrying out routine maintenance while in orbit some 250 miles (400 km) above Earth, the astronauts contributed to hundreds of science experiments and technology demonstrations.
Highlights included studies of the genetic expression in cotton cells cultured in space, gaseous flame combustion in microgravity and the DNA sequences of bacteria inside the station.
Crew members also tested new robot devices, harvested chili peppers grown in orbit and conducted experiments in space physics and materials science.
Barron and Chari performed a spacewalk to prepare the station for another in a series of new lightweight roll-out solar arrays, to be used eventually on the planned Gateway outpost that will orbit the moon.
Crew 3’s return comes about a week after they welcomed their replacement team, Crew 4, aboard the space station. One of the three Russian cosmonauts also now inhabiting the station, Oleg Artemyev, assumed command of the ISS from Marshburn in a handover before Endurance departed.
