On March 28, 2015, US astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko blasted off from the Baikonur Cosmodrome in Kazakhstan, destined for the International Space Station. It would be their home for nearly a year. During his stay, Kelly set a record for the longest continuous time an American astronaut has spent in space.
Late Tuesday, Kelly returned safely back to Earth, where his health will now be thoroughly evaluated so scientists can extract valuable data on the effects of long-term space travel on the human body.
During his time in orbit, Kelly and his crewmates took hundreds of photos from the space station. We've picked out a selection of shots that illustrate Kelly's landmark time and remarkable views aboard the ISS.
Among the many scientific experiments Kelly facilitated or participated in during his time aboard the ISS, this one involved him receiving a flu shot in space at the same time his twin brother Mark received one on Earth to see how their immune systems reacted in the different environments.
Kelly was able to get out of the cramped quarters of the space station a few times to take spacewalks with other crew members. This photo shows Kelly during his third spacewalk to do some maintenance tasks and prepare for the arrival of a Russian supply capsule.
A year on a space station is enough to make anyone tired of vacuum-packed or dehydrated food. One of Kelly's experiments involved growing and testing lettuce in microgravity. According to Kelly, his space lettuce tastes a little bit like arugula.
OK, so this might be almost as great a selfie as the one from Kelly's spacewalk. This one, taken from the cupola, a relatively new addition to the space station, allows for some of the great views we've become used to seeing.
I could never figure out if it was his (lack of a) haircut or his stocky stature, but Kelly always kind of looked like a tough guy aboard the space station. To celebrate the release of "Star Wars: The Force Awakens" in December, he donned some shades and took up a truly tough-guy pose with this droid.
Here is Kelly's tough-guy pose again. This time, though, his shades are actually Microsoft's HoloLens augmented-reality system. It finally made it to the space station on the second try after the first set was destroyed when a resupply mission exploded.