A needle in countless haystacks: Finding habitable worlds - Ariel Anbar

Out of billions of galaxies and billions of stars, how do we find Earth-like habitable worlds? What is essential to support life as we know it? Ariel Anbar provides a checklist for finding life on other planets.

Lesson by Ariel Anbar, animation by TED-Ed.

[clentyanola]

i love how this video reminds us human beings that we are so small and insignificant.

[JaguarBST]

i love how these videos leaves you with more questions and improved imagination :)

[aperson]

"The only way to find out is to go out and explore."

Yeah, but then you tell us we'll never travel faster than light, which means we'll never travel interstellar distances in anything remotely approaching a practical timeframe.

[DutchbeBlazin]

Nice Video. Simple and easy to understand, explains things in lamens terms. Exciting times we live in!

[bekoriko]

"Fire and Ice" quote from Robert Frost at 2:20... anybody else noticed? :)

[themasterazn]

I thought the Habitable Zone is formally called the Goldilocks Zone, because it's neither too hot nor too cold.

[notesmaker]

You used a quote from Robert Frost 's Water And Ice.
I liked that.

[MuchButteR]

This kind of knowledge should be a standard in modern day society, I knew the info in this video since I was 13 years old.

[akshaykumarsharma]

"Fire and Ice will never be suffice"
reminds me of Fire and Ice poem by Robert Frost

[energeticwave]

The Robert Frost poem Fire and Ice was a great touch

[KillerKrab]

these animations are straight up amazing as fuck.

[bitthalsarangi]

Venus revolves Clockwise, unlike all other planets. Mistake @2:57

[mohammadaqdus]

we can find that needle using a mysterious magnet^_^

[KiwiChristian]

The list of exact conditions that a planet needs to support life is growing (i.e. it would need a moon/tides, tilt, rotation etc), This leads me further and further to the logical conclusion that there is a Creator out there (or in here).

[alan.]

Much better explanation and more clarifying than being created in six days.

[mrbushido]

it took a few hundred years till 2 people who lived in a time that made many improvements to physics to figure out how to make a flying machine and since then these machines have been improving more and more. so today physics says it is impossible to go past the speed of light but in the future people will be looking at use in the same way we look at the people who said it was impossible to fly

[ErevanLorhalien]

I'd like to point out that water can exist outside of the Goldilocks zone because of pressure. If the planet has enough pressure on it's surface, then the water can remain a liquid. Were assuming that planets have the same pressure on their surface as Earth and then would require a certain temperature above our freezing point and below our boiling point. Also things like salt change the temperature in which water freezes and boils.

[LiekeBeunders]

I found it via reddit, but it's an article on bbc. The article is called something like "New player in 'second earth' " Hope you can find it :)

[PIPOx]

astronomy videos from ted are the most interesting

[Demoniclime]

These videos really make me think. If only they could be longer...