Help make Alexa smarter on Alexa Answers. Sign in with Amazon

Science

When does water come from?


All of Earth's vast reservoirs of water, came here from space. Billions of years ago, our sun, planets and solar system, formed from a big nebula cloud made of all the natural elements. Oxygen, Hydrogen & water were part of that cloud, and collected on Earth. Comets striking Earth also contributed.

{{ relativeTimeResolver(1608696890084) }}

LIVE
Points points 28
Rating

Similar Questions
Sign in to view all similar questions

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world

LEARN MORE