For 340 days, the world looked up to astronaut Scott Kelly as he documented his innovative year aboard the International Space Station (ISS). Kelly shared spectacular images and even some thank-you notes from 240 miles above the earth.
But Kelly's time in space was anything but fun and games. He was a crucial half of the two subjects of NASA's Twin Study.
Around 6 pm on Thursday night, the Japanese spacecraft Hayabusa 2 touched down on Ryugu—a distant asteroid.
The craft wasn't there to make friends, something it promptly proved by firing a bullet into the asteroid. The goal, according to officials at the Japan Aerospace Exploration Agency, is for Hayabusa 2 to collect debris from the asteroid to bring back to Earth for testing.