3

We all know that the water on Earth came from asteroids that collided on the Earth. But how does water form in the asteroids?

avito009
  • 301
  • 1
  • 3
  • 4
  • 1
    The sentence "We all know that the water on Earth came from asteroids" seems a bit strong. As far as I know the origin of water on Earth is still being debated: https://astronomy.stackexchange.com/questions/8206/do-did-the-asteroids-contain-enough-water-to-create-earths-oceans. As can be seen in the answer to https://astronomy.stackexchange.com/questions/10277/how-did-water-get-on-earth there are still differences in the deuterium content between Earth and the asteroids. – arkaia Mar 21 '17 at 17:24
  • I'm voting to close this question as off-topic because it belongs in astronomy.stackexchange.com – arkaia Mar 21 '17 at 17:29
  • 2
    Please do not multi-post, you already asked this question on astronomy. – gerrit Mar 21 '17 at 17:42
  • 3
    I'm voting to close this question as off-topic because you already asked it on astronomy SE, a community better suited to answer this question because the answer is essentially from the stars (although planetary science is on-topic here). – gerrit Mar 21 '17 at 17:47
  • While already answered, the answer is also basically explained here: https://en.wikipedia.org/wiki/Frost_line_(astrophysics) – userLTK Mar 22 '17 at 05:34
  • That question was about how water formed on Earth. Here I am asking as to how water was formed in the asteroids at the first place. – avito009 Mar 22 '17 at 10:38

1 Answers1

1

hydrogen is the most common element in the universe, Oxygen is the third most common element in the universe, hydrogen + oxygen + heat/energy = water. Water is literally the most common compound in the universe.

John
  • 6,856
  • 20
  • 31