There's a black sheep Plan B that some top tier scientists have been investigating to fight global warming, and in order to learn enough about it—or rule it out completely—they say we might just have to float a giant balloon with a solar-powered monitoring system into the stratosphere.
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.
