Artemis II crew prepares for homecoming
Artemis II crew members, from left, Commander Reid Wiseman, mission specialist Christina Koch, pilot Victor Glover and Canadian astronaut and mission specialist Jeremy Hansen answer media questions Wednesday during a video conference.
HOUSTON — Drawing closer to Earth, the Artemis II astronauts tidied up their lunar cruiser for its upcoming "fireball" return and reflected on their historic journey around the moon, describing it as surreal and profound.
As the next-to-last day of their flight dawned Thursday, humanity's first lunar explorers in more than half a century were less than 150,000 miles from home with the distance dwindling.
"We have to get back. There's so much data that you've seen already, but all the good stuff is coming back with us. There are so many more pictures, so many more stories," pilot Victor Glover said, adding, "riding a fireball through the atmosphere is profound as well."
Being cut off from all of humanity for nearly an hour while behind the moon was especially "surreal," according to commander Reid Wiseman.
"There's a lot that our brains have to process … and it is a true gift," Wiseman said late Wednesday during the crew's first news conference since before liftoff.
While out of contact behind the moon Monday, Wiseman, Glover, Christina Koch and Canada's Jeremy Hansen became the most distant humans ever, clocking in at a record 252,756 miles from Earth before heading back.
As they emerged from behind the moon, they experienced a wondrous total solar eclipse as the orb blocked the sun from their perspective.
Launching from Florida on April 1 diminished the amount of illumination on the lunar far side, Glover noted, but the eclipse was the consolation prize "and it was one of the greatest gifts."
Friday's scheduled reentry and Pacific splashdown off the coast of San Diego — as dynamic and dangerous as liftoff — now topped everyone's minds. The recovery ship, USS John P. Murtha, was already at sea, with a squadron of military planes and helicopters poised to join the operation.
It's the first time NASA and the Defense Department teamed up for a lunar crew's reentry since Apollo 17 in 1972. Their Orion capsule will hit the atmosphere at a predicted 34,965 feet per second — or 23,840 mph — not a record but still mind-bogglingly fast.
Mission Control will pay close attention to how the capsule's heat shield holds up. During the only other Orion test flight to the moon — in 2022 without a crew — the heat shield suffered considerably more damage than expected from the 5,000 degrees Fahrenheit temperature of reentry.
Instead of replacing Artemis II's heat shield, which would have forced another lengthy delay, NASA tweaked the capsule's descent through the atmosphere to reduce the blisteringly hot exposure. Next year's Artemis III and beyond will fly with redesigned heat shields.
Artemis III will see astronauts practice docking their capsule with a lunar lander or two in orbit around Earth. Artemis IV in 2028 will attempt to land two astronauts near the moon's south pole, setting the stage for what NASA hopes will be a sustainable lunar base.
NASA officials were loath to provide their risk assessment numbers for the nearly 10-day mission, acknowledging launch and reentry as the biggest threats.
"We're down to the wire now," said NASA's Lakiesha Hawkins. "We're down to the end of the mission, and obviously getting the crew back home and getting them landed safely is a significant part of the risk that's still in front of us."
