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K2-18b is exciting because it's the smallest world
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Universe

K2-18b is exciting becauseit's the smallest world with an atmosphere that we've beenable...

Universe • S01E02 • 2021
K2-18b is exciting because
it's the smallest world with an atmosphere that we've been
able to analyse, and we've found that
its mass and density, composition of its atmosphere
and its orbits are consistent with it being
a world with water

Full Transcript

00:00:01.000 --> 00:00:05.036
K2-18b is exciting because it's the smallest world
00:00:05.036 --> 00:00:08.008
with an atmosphere that we've been able to analyse,
00:00:08.008 --> 00:00:10.096
and we've found that its mass and density,
00:00:10.096 --> 00:00:14.008
composition of its atmosphere and its orbits
00:00:14.008 --> 00:00:17.004
are consistent with it being a world with water.
Duration
17 seconds
Views
55
Timestamp in Movie
00:33:34
Uploaded
May 25, 2025
Season
1
Episode
2
Genres
documentary
Production
Samsa Film,KeyFilm

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Movie Summary

Professor Brian Cox journeys across the vastness of time and space revealing epic moments of sheer drama that changed the universe forever.
S01 • E01 But what we do know is that at some point, - Universe 00:14
But what we do know is that at some point,
S01 • E04 Having cleared out much of the gas, dust and stars that once lay close by, - Universe 00:11
Having cleared out much of the gas, dust and stars that once...
S01 • E05 So, what was the universe like before the Big Bang? - Universe 00:05
So, what was the universe like before the Big Bang?
S01 • E02 And it might be a world with oceans on its surface. - Universe 00:05
And it might be a world with oceans on its surface.
S01 • E01 These cells formed a bridge between Earth and Sun, - Universe 00:20
These cells formed a bridge between Earth and Sun,
S01 • E03 but we may ha ve been conceived in a collision. - Universe 00:05
but we may ha ve been conceived in a collision.
S01 • E05 The first thing to say is that it was very strange. - Universe 00:05
The first thing to say is that it was very strange.
S01 • E02 But just imagine what that small, faraway world - Universe 00:09
But just imagine what that small, faraway world
S01 • E04 The enormous bubbles spotted by Fermi... - Universe 00:08
The enormous bubbles spotted by Fermi...
S01 • E03 Now, we can't say for certain that the collision with Sagittarius dwarf - Universe 00:07
Now, we can't say for certain that the collision with S...
S01 • E05 There was no matter. - Universe 00:17
There was no matter.
S01 • E03 The data is not precise enough, - Universe 00:05
The data is not precise enough,
S01 • E02 Kepler went on to make many more discoveries... - Universe 00:04
Kepler went on to make many more discoveries...
S01 • E03 But what we can say is that the birth of the sun - Universe 00:09
But what we can say is that the birth of the sun
S01 • E04 Today, Sagittarius A * is a sleeping giant, - Universe 00:12
Today, Sagittarius A * is a sleeping giant,
S01 • E01 This process, known as photosynthesis, - Universe 00:08
This process, known as photosynthesis,
S01 • E03 But that's not quite the end of the story, - Universe 00:08
But that's not quite the end of the story,
S01 • E02 ...until, in October 2018, it finally ran out of fuel. - Universe 00:07
...until, in October 2018, it finally ran out of fuel.
S01 • E05 Before the Big Bang, - Universe 00:07
Before the Big Bang,
S01 • E02 After nine years, it had found over 2,500 alien worlds... - Universe 00:07
After nine years, it had found over 2,500 alien worlds...