A planet found at an extreme distance from its parent star may have been kicked out by a fellow planet.
Planet HD 106906b orbits 16 times as far from its parent star as Pluto lies from the sun. A new study of the far-flung alien planet reveals what appears to be a lopsided comet belt surrounding its parent star — a finding scientists say indicates a history of violence in the early planetary system.
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.
