Space bubble: Three astronauts will return to Earth tomorrow after almost 200 days on the ISS

NASA's Chris Cassidy and Russia's Anatoly Ivanishin and Ivan Vagner have been crewing the orbiting laboratory as part of its so-called Expedition 63.

Space bubble: Three astronauts will return to Earth tomorrow after almost 200 days on the ISS
NASA's Chris Cassidy and Russia's Anatoly Ivanishin and Ivan Vagner have been crewing the orbiting laboratory as part of its so-called Expedition 63.