NASA television, ScienceCasts: What Exploded Over Russia? video

NASA television, ScienceCasts: What Exploded Over Russia? video

videos   2/26/2013 10:13:00 AM

Two weeks after an asteroid exploded over Russia's Ural mountains, scientists are making progress understanding the origin and make-up of the unexpected space rock. 

This week's ScienceCast presents their latest results.

NASA Television ScienceCast: Record-Setting Asteroid Flyby video

NASA Television ScienceCast: Record-Setting Asteroid Flyby video

videos   1/28/2013 12:10:00 PM

On Feb. 15th an asteroid about half the size of a football field will fly past Earth closer than many man-made satellites.

Since regular sky surveys began in the 1990s, astronomers have never seen an object so big come so close to our planet.