Scott Kelly answers Reddit ‘Ask Me Anything’ questions – from orbit
International Space Station (ISS) Commander Scott Kelly conducted NASA’s first Reddit Ask Me Anything (AMA) from space, answering questions ranging from what it’s like to work with an international crew to whether-or-not a rogue spaceship could sneak-up on the orbiting outpost.
The AMA lasted a little over an hour on Saturday, Jan. 23 starting at 3 p.m. CST (20:00 GMT). It was the Expedition 46 commander’s 302nd consecutive day in space since he arrived at the outpost last March for his Year in Space mission. This is his fourth spaceflight and he is the current American record-holder for the most total days in space was well as for the single longest mission.
“I still have a way to go before I return to our planet,” Kelly said on Reddit, “So, I look forward to connecting with you all back on spaceship Earth to talk about my experiences so far as I enter my countdown to when I will begin the riskiest part of this mission: coming home.”
Many of the questions asked had to do with health effects on Kelly’s body due to weightlessness.
“There are a lot of changes that happen [to your body in space],” Kelly said. “Some of them you can’t see, because it’s your eyes!”
In space, body fluids shift upwards toward the head. This causes, among other things, the eye to experience more pressure, changing its shape. This shape change can alter vision.
“My muscles and joints are a whole lot better up here than with gravity,” Kelly said, responding to a user’s question about stretching in space versus on Earth. “It’s almost like you are in a bed rest. There is no pressure or pain. I do stretch before I exercise because my muscles aren’t stretched out, they are somewhat dormant.”
While some questions were more technical, other were more about life in space.
“If you had a big scoop of something powdery, like if you were measuring out cinnamon or another powered spice, would it float around in a little powdered blobby cloud,” user ventphan asked.
“It would be a disaster to have something powder like that,” Kelly said. “Depending on how much it was, we would possibly consider shutting down the ventilation to stop it from spreading.”
Kelly also mentioned that he uses a liquid salt, as opposed to granular salt used on Earth, to season his food as to avoid it spreading throughout the modules.
User Maximsalehson asked what Kelly focused mostly on in high school.
“Unfortunately for me, I focused on looking out the window and daydreaming, which took a lot of effort to recover from,” Kelly said adding that it proves anything is possible.
Kelly told user pighalf what he thought was the most unusual thing about being in space that most people don’t think of: calluses.
“The calluses on your feet in space will eventually fall off,” Kelly said. “So, the bottoms of your feet become very soft like newborn baby feet.”
Kelly said, however, that the top of his feet develop “rough alligator skin” due to the use of hand and foot rails to get around the modules of the station.
One user asked what Kelly thought was the largest misconception about space exploration that society holds onto. He said he thinks it is the idea that space is easy.
“I think a lot of people think, that because we give the appearance that this is easy, that it is easy,” Kelly said. “I don’t think people have an appreciation for the work that it takes to pull these missions off, like humans living on the space station continuously for 15 years. It [takes] a huge army of hard working people to make it happen.”
Other questions included what he thought the most interesting science experiment he worked on was, if the ISS has any particular smell, and what it feels like having nothing but a suit between him and space.
Also asked was Kelly’s view on how the space station has aged over the last decade and a half.
“It seems like the inside of the space station has very good material condition,” Kelly said. “The outside looks a little aged.”
Regarding whether or not to keep the space station going indefinitely, Kelly said it depends on what priorities are.
“Everything has costs,” Kelly said.
Finally, a father asked for one of his children if a rogue spaceship could sneak up on the space station without the crew being aware.
“Maybe [if it was] an alien spaceship with a cloaking device,” Kelly said, “but not your normal spaceship, no. Unless it had a cloaking device, which doesn’t exist, the U.S. Air Force would see it coming.”
“Thanks [Commander] Kelly for your response,” the father replied back, “I just read this to the boys and now they think this sort of exchange is an everyday occurrence. Boy, the future is awesome.”
Canadian Space Agency astronaut Chris Hadfield beat NASA to the punch in terms of being first to conduct a Reddit AMA from on orbit—in 2013.
To read more questions and answers, visit the Scott Kelly AMA page.
Video courtesy of Scott Kelly
Derek Richardson has a degree in mass media, with an emphasis in contemporary journalism, from Washburn University in Topeka, Kansas. While at Washburn, he was the managing editor of the student run newspaper, the Washburn Review. He also has a blog about the International Space Station, called Orbital Velocity.