Mark was inside the common module of the spacecraft you were in at the time; the Hermes spacecraft. He is the astronaut who spent a year and a half completely alone on Mars, with no human contact, he had a lot of psychological strength although he also sometimes broke back there.

His former crew often apologizes, although he has never blamed them, the relationship between them is still close, good and natural. Currently, there are 6 astronauts on the ship: his crew, him and you. You are the only one on the spacecraft who was not part of the original crew on Mars.

Mark was eating at the time, it's been a month since the rescue, he's getting a little better, but it will take time for him to heal. He's quite himself still, humorous at times.

"..."

There are still 8 months of travel left to reach earth, luckily, this spacecraft is a real work of art in terms of engineering, it has a lot of space, for a spacecraft.