As astronaut and prolific tweeter Chris Hadfield prepares for his return to Earth, we take a look at his highlights in space.
International Space Station astronaut Chris Hadfield has recorded a video for David Bowie's Space Oddity - in space.
The seventh Earth Hour, an annual event that encourages the public to turn their power off for an hour, has been marked around the world.
Hadfield gained hundreds of thousands of fans through his pioneering use of Twitter, Facebook and YouTube during his time on board the International Space Station.
He told news agency The Canadian Press: "I will be making good on a promise I made my wife nearly 30 years ago - that yes, eventually, we would be moving back to Canada.
"I'm looking forward to the next phase of life."
The astronaut, who famously performed a cover version of David Bowie's Space Oddity while onboard the International Space Station, said he had not decided what to do next.
The UK's first official astronaut Major Tim Peake told ITV News he wanted to continue Commander Chris Hadfield's "great work" of tweeting pictures from space but would not "inflict" his singing voice on the world.
Cdr Hadfield, from Canada, performed a cover of David Bowie's song Space Oddity while he was onboard the International Space Station.
Maj Peake said he was "delighted" with his mission to space and added that his family were "thrilled" for him.
Britain's first official astronaut Major Tim Peake said he would not follow Commander Chris Hadfield's example of releasing a music video from space.
Cdr Hadfield, from Canada,gained a legion of fans on the Soyuz space capsule mission to and from the ISS, by performing a cover of the David Bowie classic, Space Oddity.
In a jokey reference to David Bowie fan, Cdr Hadfield, Maj Peake said: "I do play the guitar, but very badly, and I wouldn't inflict my singing on anybody."
Astronaut Chris Hadfield has used his webcam - and growing international audience - to demonstrate what happens to tears in space.
"Your eyes will definitely cry in space, but the difference is: tears don't fall," he shows, using a growing pool of water that sticks to his eye and cheek.
Astronaut Chris Hadfield is going to present his crew with some Easter egg treats in space.
The Easter Eggs are a surprise for his colleagues on board the International Space Station, currently orbiting earth.
Canadian astronaut Commander Chris Hadfield, currently on board the International Space Station, has been tweeting images of major cities prior to Earth Hour.
He wrote, "New York City, lit up like a bulb. The Statue of Liberty is clearly visible in the night from above".
The commander also highlighted that "spiderwebs of light expanding out from the dark river border" could be seen of Detroit and Windsor.