Mark Zuckerberg Q&A with astronauts on the International Space Station

Mark Zuckerberg Q&A with astronauts on the International Space Station Live Q&A with astronauts on the International Space Station! Leave your questions below. https://twitter.com/markzuckvideos http://ift.tt/2i2KiTx http://ift.tt/2hTFQIO http://ift.tt/2i2SOBT