For three decades, humans have searched for signs of intelligent life beyond Earth, and yet we've only sampled a tiny drop of our vast cosmic ocean. If we're ever to find a radio-hot, spacefaring civilization, we need to know where to point our telescopes.
The supermassive black hole is 40 million times as massive as the sun and powers a quasar that existed 700 million years after the Big Bang.
The asteroid zoomed by Earth at a perfectly safe distance of around 1.8 million miles (2.9 kilometers).
Images show surprise changes to the spacecraft as it interacted with the atmosphere.
