When a meteor streaks across the sky, it's not just beautiful. It's nature's way of delivering a time capsule to Earth.

Outer space contains more incredible phenomenons and unsolved mysteries than anywhere else—and we think it's just fascinating. Join Hank for an incredible tour of our solar system in this SciShow ...

An essential amino acid that is mistakenly believed to cause drowsiness after eating turkey has been found in an asteroid for the first time, giving scientists clues to the origin of life on Earth.