Skip to main content

Where did Earth's water come from?

8,094,298 Views

9,334 Questions Answered

Best of Web

Let’s Begin…

The planets in our solar system are made up of varying formations of rocks, water (ice), and gases. Scientist have figured out where most of these materials come from except water. This led to more research and eventually ...the question: "Did water come from a galaxy far, far away? Realizing that water just wasn't here from the beginning, they had more discovering to do to explain its origins.

In your own words, explain how scientists discovered that comets were not the source of water on Earth (video hint at 1:16).

Login to answer question

About TED-Ed Best of Web

TED-Ed Best of Web are exceptional, user-created lessons that are carefully selected by volunteer teachers and TED-Ed staff.

Meet The Creators

More from The Big Questions