Earth didn't have water when it formed, but it does now! How did it get wet?

Mercury, Venus, and Mars are all super low on water – so where did ours come from and why do we have so much of it? We think our water came from a few unlikely sources: meteorites, space dust, and even the sun.

SciShow explores two celestial mysteries: the origins of a meteorite that crashed into a house in California, and who's releasing chemicals into the atmosphere that were banned more than 25 years ago?

Earth didn't have water when it formed, but it does now! How did it get wet?

November 7, 1492 - A meteorite crashes through Earth’s atmosphere, creating a sonic boom and illuminating the sky above the Austrian capital. Known as the Donnerstein, or Thunderstone, the deafening sound of the fireball is heard over...

November 7, 1492 - A meteorite crashes through Earth’s atmosphere, creating a sonic boom and illuminating the sky above the Austrian capital. Known as the Donnerstein, or Thunderstone, the deafening sound of the fireball is heard over...

November 7, 1492 - A meteorite crashes through Earth’s atmosphere, creating a sonic boom and illuminating the sky above the Austrian capital. Known as the Donnerstein, or Thunderstone, the deafening sound of the fireball is heard over...