Where Did Earth's Water Come From?

Written & Researched by Leila Battison. Check out her channel:-
Script & video edited & by Pete Kelly. Check out his channel:-
Narrated by David Kelly. Check out his channel:-

Thumbnail Art by Ettore Mazza
Artwork by Eduardo Valdez

References:-

Image sources:-
NASA/Goddard Space Flight Center

[HistoryoftheEarth]

Hi everybody! Thanks so much for the kind words and support so far! We are a brand new channel attempting a hugely ambitious project, telling no less than the entire history of our world. Please like, subscribe and share if you enjoyed the video as this will help us immeasurably to make this project financially viable. Why not share with a like minded friend- it will help us more than you know, and let us know in the comments what eras of the past you are most looking forward to seeing! A few spring to mind for me *Dinosaurs*... *Late Permian Extinction*... Thanks again and hope you enjoy the videos!

[mnichols]

I remember when history channel and discovery channel had programs like these. But these are even better!

[ginociambotti]

I've watched almost the entirety of the videos in this channel and still can't get over the literary skill at narrating science that is found here. A true gem for documentary lovers.

[latheofheaven]

I'm old enough to have heard the stories of geology and biology told a thousand times, but you're bringing new information (to me) in every video. Really good job Leila and the team. Thank you.

[mekadeth]

A note about Percival Lowell, there is some evidence that he suffered from glaucoma, which tended to make the cause a shadow of the veins and nerves appear on the retina as it is pushed up against them by pressure. Tests have been done on the eye piece that he used on his telescope and they show that a person with glaucoma would be able to notice these shadows if you look through it at a mostly singular color. Thus the general belief is that the canals that he saw were actually the shadowy reflection of his eyes' own retina.

Edit: Changed Cornea to Retina, as it should be. As pointed out by Paul Endry, the Cornea doesn't actually have a blood supply (it gets oxygen from the air, not through they blood supply.)

[Alan-Cummins]

This series is superbly put together. The breath of what’s been discussed is immense, the narrative compelling and it brings the realisation how lucky we are to live on this beautiful blue planet.

[SB-oiqo]

This is such a great series, a massive thank you to everyone involved in putting this together, can't wait for the next one!

[anandkrishna]

“A planet once gifted, then robbed”
I feel so sorry for Mars now😭

[Jabranalibabry]

Blown away by the quality of this production and the passion of the narration ❤️

[harddrive]

If I ever make it to where I can afford to donate huge sums of money to a charity, I would donate to educational productions like this. Thank you for this channel!

[red_nikolai]

"No rocks survive from that time"
Except that one trooper we talked about last video.

Great work, loving this channel! It's strange and amazing to think that our water and metals were sent to us by Jupiter, or that the water in my own flesh was originally from something like the asteroid belt and not Earth. Or to look out my window and know that, right up there, invisible in the sky, is a titanic shield keeping me safe.

[resileaf]

I'm just here, enjoying one of the most in-depth history channel on Youtube.

[peterpaldor]

This is such a treat.
Best used half an hour I've done for a long time.

[lordmoldybutt]

Just as I'm beginning to worry i might be unsatisfied on this Sunday night before my work week begins, because i can't find a video to help lull me. Your content swoops in to help educate & sooth my ever turning mind. Thank you sir.😎🤘

[nobaso]

Sometimes I just look outside my window and get to ask myself how did I get here and how I take for granted to have this experience of life.I mean its both beautiful and weird . A very deep illusion.

[evanstorm]

I shall never complain about the rain again! This is probably my favourite episode so far. Looking forward to the rest of them.

[Bloodknok]

This is a super-fascinating series - just the right amount of detail, with a wonderfully verbose script.

[lukeonuke]

You know the feeling when you run into a high quality channel with valid information

[Wonkabar]

This whole series is so watchable, really well put together.
Earth seems to have been on an incredible run of luck to be like it is today,
will anything ever end the lucky run ?

[elkiness]

Wonderful, every aspect. The visuals are stunning. The narration clear, with a very expressive and pleasant voice. The information is up to date, way beyond what I once learned. Yes, I am indeed sharing.