This man has orbited Earth 5,440 times!
Commander Scott Kelly of the International Space Station returns to Earth today, after spending a whopping 340 days aboard!
Scott's been serving with our very own Tim Peake - specifically investigating how the human body adapts to being in Space for an extended period of time (think radiation, gravitational pull and lots more!).
So, are we any closer to securing that golden ticket to Mars? Laura weighs up his vital statistics after he's travelled at 17,000mph and orbited Earth 5,440 times!