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Where Did Earth’s Water Come From?
Anyone who’s ever seen a map or a globe easily knows that the surface of our planet is mostly covered by liquid water — about 71%, by most estimates — and so it’s not surprising that all Earthly life as we know it depends, in some form or another, on water. (Our own bodies are composed of about 55-60% of the stuff.) But how did it get here in the first place? Based on current understanding of how the Solar System formed, primordial Earth couldn’t have developed with its own water supply; this close to the Sun there just wouldn’t have been enough water knocking about. Left to its own devices Earth should be a dry world, yet it’s not (thankfully for us and pretty much everything else living here.) So where did all the wet stuff come from?
As it turns out, Earth’s water probably wasn’t made, it was delivered. Check out the video above from MinuteEarth to learn more.
MinuteEarth (and MinutePhysics) is created by Henry Reich, with Alex Reich, Peter Reich, Emily Elert, and Ever Salazar. Music by Nathaniel Schroeder.
Jason Major on Google+© Jason Major for Universe Today, 2014. |
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Post tags: Chondrites, Earth, Meteorites, Minute Physics, MinuteEarth, origin, Solar System, water
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Source: http://www.universetoday.com/109467/where-did-earths-water-come-from/
Question should of been, how did first the oxygen form..
because, the hydrogen can come from the sun…
like in the ‘days of Noah,
^explainable presently…
rubs salt in the wounds..
Hello. Thanks for trying, but that little kids video spews nothing but non-facts.
Search on “Massive-quasar-water-reservoir” and look for a jpeg image of a picture taken by the Hubble Telescope. Water is all around the universe, distributed buy .01 percent of all quasars.
I have looked at literally thousands of Hubble telescope images of the cosmos. This one is the most amazing of all. Blue like you cannot imagine. And water sprouting from the up and down side like a gusher of unimaginable proportions.
Water is every in the Universe because of Massive-quasar-water-reservoirs; literally billions of them.
Take a look for yourself.
I actually use the image as my desk top image on my monitor.
Enjoy, and be truly amazed.