55K views · 4.2K reactions | Former astronaut Mark Kelly talks about next week's conclusion of the One-Year Mission of his identical twin brother, NASA Astronaut Scott Kelly. The brothers participated in the Twins experiment to compare Scott's body after a year in space with his Earth-bound brother Mark’s. | International Space Station | Facebook

93K views · 2.8K reactions | A supermassive black hole heftier than 1 billion suns has been ejected from the core of its galaxy by gravitational waves, a new study suggests. The monster black hole has already zoomed 35,000 light-years away from its galaxy's center, farther than Earth and its sun are from the core of our own Milky Way. Keep reading: https://goo.gl/hykLd5 | Space.com | Facebook