The Cooperative Adventure for Valuing and Exercising human behavior and performance Skills (CAVES) is a two-week astronaut training course that occurs yearly in the Sa Grutta caves in Sardinia, Italy.
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.