--- title: A Year In Space: One Month Down for Scott Kelly description: The first 30 days of Scott Kelly's marathon mission aboard the International Space Station are in the books. canonical: https://time.com/3837134/a-year-in-space-first-month-scott-kelly/ author: Jeffrey Kluger article:opinion: false article:content_tier: free article:published_time: 2015-04-28T23:21:20.000Z article:modified_time: 2026-08-04T07:41:04.564Z article:section: Science og:title: A Month Spent in Space—and 11 More to Go og:description: The first 30 days of Scott Kelly's mission aboard the ISS are in the books og:url: https://time.com/3837134/a-year-in-space-first-month-scott-kelly/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt6c20e22a554af386/6987ed73e53aba43df4db91f/scott-kelly-2015-3-301.jpg?branch=production&width=2400&quality=75&auto=webp&crop=16:9 og:image:width: 1200 og:image:height: 675 og:image:alt: scott-kelly-2015-3-30 og:type: article twitter:card: summary_large_image twitter:title: A Month Spent in Space—and 11 More to Go twitter:description: The first 30 days of Scott Kelly's mission aboard the ISS are in the books twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt6c20e22a554af386/6987ed73e53aba43df4db91f/scott-kelly-2015-3-301.jpg?branch=production&width=2400&quality=75&auto=webp&crop=16:9 ---  # A Month Spent in Space—and 11 More to Go ## Video: A Year in Space: The Mission [Watch (HLS stream): A Year in Space: The Mission](https://cdn.jwplayer.com/manifests/gEqrnCPI.m3u8) (3:59)  _Published 2015-03-24. On March 28, NASA astronaut Scott Kelly begins a historic year in Space. Time follows Kelly and his twin brother, Mark, as they work the test the boundaries of long-term space travel._  by [Jeffrey Kluger](https://time.com/author/jeffrey-kluger/)  ## Jeffrey Kluger Editor at Large Apr 28, 2015 11:21 PM UTC  Scott Kelly posted this selfie on March 30, shortly after his arrival to the space station, while moving into his living quarters, where he will sleep during his year in space. Scott Kelly posted this selfie on March 30, shortly after his arrival to the space station, while moving into his living quarters, where he will sleep during his year in space.Scott Kelly—NASA  by [Jeffrey Kluger](https://time.com/author/jeffrey-kluger/)  ## Jeffrey Kluger Editor at Large Apr 28, 2015 11:21 PM UTC A year in space is marked in part by the holidays that will pass while you’re away. Christmas? Sorry, out of town. Easter? Ditto. Thanksgiving, New Year’s Eve, Halloween? Catch you next year. It’s fitting then, that the first holiday astronaut Scott Kelly spent in the just-completed first month of his planned one-year stay aboard the International Space Station (ISS)—which began with his launch from the Baikonur Cosmodrome in Kazakhstan in the early morning hours of March 29—was Cosmonautics Day. Never heard of it? You would have if you were Russian. Cosmonautics Day celebrates April 12, 1961, when Yuri Gagarin lifted off from the same launch pad from which Kelly’s mission began, becoming the first human being in space. Kelly and his five crewmates—including fellow one-year marathoner Mikhail Kornienko—got the morning off on this year’s special day, taking the opportunity to enjoy the relative comforts of a spacecraft with more habitable space than a four-bedroom home. But in the afternoon it was back to work—following a moment-by-moment schedule that is scripted on the ground, followed in space and that, while often grueling, is the best way for astronauts and cosmonauts who have signed on for a long hitch to keep their minds on their work and keep the time from crawling. Kelly’s first month was, in some ways, typical of the 11 that lie ahead. There was the arrival of a SpaceX cargo ship—a vessel carrying 4,300 lbs (1,950 kg) of equipment and supplies, including a subzero freezer that can preserve experiments at -112º F (-80º C)—that needed to be unloaded; new gear to aid studies of the effects of microgravity on mice; and a sample of so-called synthetic muscle, a strong but pliant material modeled after human muscle, to be used for robotic limbs and joints. Also tucked into the load was a less practical but infinitely more anticipated item—a zero-gravity espresso machine, dubbed the ISSpresso. ### See Scott Kelly's First 30 Days in Space  Scott Kelly has posted a photo almost every day since arriving at the ISS. Here, see a selection from his first 30 days in space. (Via Twitter on April 23, 2015) Scott Kelly—NASA  "Was asked what I write down on this small kneeboard. Mostly hardware serial numbers and #ISS locations. #YearInSpace" - via Twitter on April 28, 2015 Scott Kelly—NASA  "I wonder what they do here. #NorthAfrica #YearInSpace" - via Twitter April 27, 2015 Scott Kelly—NASA  "Looks serene from @Space\_Station, but my thoughts are still with the people affected by the #NepalEarthquake." - via Twitter on April 26, 2015 Scott Kelly—NASA  "#Movie night in micro #Gravity aboard #ISS on our new HD projector which we use for conferences, tech software, etc.." - via Twitter on April 25, 2015 Scott Kelly—NASA  "My #bedroom aboard #ISS. All the comforts of #home. Well, most of them. #YearInSpace" - via Twitter on April 24, 2015 Scott Kelly—NASA  "#EarthObservations Window on the world. Studying our planet from the cupola on @space\_station #NoPlaceLikeHome" - via Twitter on April 22, 2015 Scott Kelly—NASA  "Blown away by a dust swept #RedSea. Good morning from the @space\_station! #YearInSpace." - via Twitter on April 21, 2015 Scott Kelly—NASA  "#Calcutta area shimmers in the sunlight. #YearInSpace" - via Twitter on April 20, 2015 Scott Kelly—NASA  "Africa. I wonder what these desert sands look like up close?#YearInSpace" - via Twitter on April 19, 2015 Scott Kelly—NASA  "Working on #ISS research today & how micro gravity impacts aging and muscles of the C Elegan roundworm. #YearInSpace" - via Twitter on April 18, 2015 NASA  "Great job @AstroSamantha and @AstroTerry capturing #SpaceX Dragon this morning! #YearInSpace" - via Twitter on April 17, 2015 Scott Kelly—NASA  "The varied colors of #Madagascar. #YearInSpace" - via Twitter on April 16, 2015 Scott Kelly—NASA  "Sometimes the #world seems to shimmer. #YearInSpace" - via Twitter on April 15, 2015 Scott Kelly—NASA  "Congrats @SpaceX and @NASA team on a successful launch! Watched with my crewmates aboard #ISS. #YearInSpace" - via Twitter on April 14, 2015 Scott Kelly—NASA  "This #butterfly caught my eye while flying high above the #gulfofmexico. #YearInSpace" - via Twitter on April 13, 2015 Scott Kelly—NASA  "Not sure what is going on on this beach in #Mexico but it's a striking image. #YearInSpace" - via Twitter on April 12, 2015 Scott Kelly—NASA  "#Earth is breathtaking. #YearInSpace" - via Twitter on April 11, 2015 Scott Kelly—NASA  "Hopefully this is pollen or algae and not something man made. #YearInSpace" - via Twitter on April 10, 2015 Scott Kelly—NASA  "Madagascar drains its red mud into the Indian Ocean. #YearInSpace" - via Twitter on April 9, 2015 Scott Kelly—NASA  "Looks messy, but it's functional. Our #food table on the @space station. What's for breakfast? #YearInSpace" - via Twitter on April 8, 2015 Scott Kelly—NASA  "#Patagonia never disappoints. #YearInSpace" - via Twitter on April 7, 2015 Scott Kelly—NASA  "#Australia. You are very beautiful. Thanks for being there to brighten our day. #YearInSpace" - via Twitter on April 6, 2015 Scott Kelly—NASA  "Good morning Southern #Florida from the #ISS. #YearInSpace" - via Twitter on April 5, 2015 Scott Kelly—NASA  "Enjoying Saturday evening dinner with @AstroTerry on the #ISS" - via Twitter on April 4, 2015 NASA  "#FlashbackFriday Got my 1st EMT training at 16\. Emergency medical training on #ISS keeps me 35 years proficient." - via Twitter on April 3, 2015 Scott Kelly—NASA  ".@FLOTUS Thank you. Made it! Moving into crew quarters on @space\_station to begin my #yearinspace." - via Twitter on March 30, 2015 Scott Kelly—NASA There are 250 experiments that must be tended at any one time aboard the ISS, but the most important of them will be Kelly and Kornienko themselves. The human body was built for the one-g environment of Earth, but if we ever hope to achieve our grand dreams of traveling to Mars and beyond, we’d better figure out if we can survive the rigors of zero-g. And that’s no sure thing. Almost every system in the body—circulatory, skeletal, cellular, visual—breaks down in some ways in weightlessness. In their first month in space alone, the two long-termers submitted to a whole range of preliminary experiments that will track their health throughout their stay: their eyes are being studied to determine the kind of effect the upward shift in fluids caused by zero-g has on the optic nerve and the shape of the eyeball. Space physicians already know the basic answer: not a good one. But the hope is that Kelly and Kornienko will help provide ways to mitigate the damage. Other biomedical studies in the first month include sampling saliva and sweat to test for bacterial levels and chemical balance; leg scans to determine blood flow; studies of blood pressure—which can fluctuate wildly when the heart no longer has to pump against gravity; analyses of throat and skin samples; bone density tests and studies of the cells to determine why they change shape in zero-g. As exquisite serendipity has it, Kelly’s identical twin brother, Mark, is a retired astronaut, providing a perfect controlled study of how men with matching genomes and matching backgrounds react to a year spent in decidedly non-matching environments. Nearly all of the studies Scott submits to in space will be duplicated in Mark on the ground. The eleven months ahead will not all be a Groundhog Day repetition of the first. Kelly will venture out on at least two spacewalks—the first of his four-mission career—and will help oversee a complex reconfiguration of the station, with modules and docking ports repositioned to accommodate commercial crew vehicles built by Boeing and SpaceX, which are supposed to begin arriving in 2017\. There will also be movie nights and web-surfing and regular video chats, phone calls and emails with family. And the periodic arrival of cargo ships will provide such luxuries as fresh fruits and vegetables, which don’t last long in space, but don’t have to because six-person crews missing the comforts of home scarf them down fast. The clubhouse turn of Kelly’s and Kornienko’s one-year mission will occur next December, the 50th anniversary of what was once America’s longest stay in space: the two-week flight of Gemini 7, which astronauts Frank Borman and Jim Lovell passed in the equivalent of two coach airline seats, with the ceiling just three inches over their heads. The ISS is a manor house compared to the Gemini. But the astronauts are still astronauts, human beings in a very strange place experiencing very strange things—in this case for a very long time. _TIME is covering Kelly’s mission in the new series,_ [_A Year In Space_](http://time.com/space-nasa-scott-kelly-mission/)_. 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