ICYMI: Astrophysicist Neil deGrasse Tyson gave an Asteroids 101 lesson…using his tie (finally, we understand! Where was he during high school Astronomy?).

Click here to learn more.

A meteor streaking through the sky Friday morning exploded over Russia’s Ural mountains, injuring nearly 1,000 people and damaging homes and businesses in the Chelyabinsk region.

Watch this incredible footage of the meteor entering the atmosphere, and the aftermath of its entry. Learn more here.