Many dying stars just a little bit more massive than the sun have superpowerful magnetic fields hidden away inside that likely play an important role in how such stars change over time, scientists say.
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.
