Meteoroids and other "lunar impacts" apparently hit the moon all the time, but rarely are they caught in the act on video. This clip, posted on NASA's site, shows a meteroid hitting the moon as recorded with a 10-inch telescope. The May 2 collision may not seem like much on the screen, but NASA says it carried the impact of four tons of TNT.
Up for a challenge?
Put yourself to the real tech test by building your own virtual-reality headset with a few household items.