Scott Kelly is less than a week from coming home. When he climbs into a Soyuz spacecraft next Tuesday night, he will have completed a 340-day mission in space, the longest ever by any NASA astronaut.

But during a space-to-ground news conference with reporters on Wednesday, Kelly said he was feeling fine and still really enjoying his time in space. "I could go another year if I had to," Kelly said. "It would just depend on what I was doing and if it made sense. Although I do look forward to getting home next week."

Kelly will land Tuesday night at 11:25pm in Kazakhstan, likely about 140 kilometers southeast of Zhezkazgan. After medical tests there, he will return to Houston on a NASA airplane and undergo subsequent tests at crew quarters at the Johnson Space Center. And what will he do when released from there early Thursday morning? He's going to go home and jump in his pool, Kelly quipped.

Overall Kelly said his health after more than 11 months in space is holding up well. "Physically I feel pretty good," he said. "That’s a very subjective data point. Certainly when we look at the data there might be effects that are more significant than how I feel. But I think the hardest part is being isolated in a physical sense from the people on the ground that are important to you. There's a loss of connection with folks on the ground you care for and love and want to spend time with."

Kelly, of course, is undergoing extensive medical study both in space and after he lands. Some of the same tests will be done on his twin brother, Mark Kelly, to determine whether long-duration spaceflight has changed Kelly's genetics in a significant way. More concrete medical information should be published in six to 12 months.