Yuri Milner is pushing forward with the hunt for intelligent alien life beyond our planet, and is investing another $100 million in a more proactive approach after putting up the original $100m last year.
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.
