Jesse Rogerson

And since I think the number is somewhere in the sixth, I don't know if it's 10,000 yet.

I think it's 6,000 planets.

And up until 1995, all we had was our solar system to go by.

And there was this hypothesis, which is really a theory now, of how the solar system formed.

It formed from a big gas cloud that

collapsed down into a star, flattened out into a disk around it, and the planets formed inside.

And this theory on how our solar system formed explains some really important things about our solar system, like why our solar system is flat, for example.

You know, it's great.

I literally just taught this in my astronomy class.

So when you look at this system, so red dwarf stars are the most common type of star in the universe.

So you expect to find planets around them.

And there's both rocky and gassy planets around this star, just like we have rocky and gassy planets.

But the order is confusing.

Here in our solar system, we have the inner rocky ones.

Mercury, Venus, Earth, Mars are rocky planets.

They're close to the sun.

And then you have the gassy ones, Jupiter, Saturn, Uranus, and Neptune, and they're far from the sun.

And that is easily explained through like a temperature gradient where close to the star, it's hotter.

And things like gases and volatiles like ices don't really like being near hot things.

And so planets that are made of gases form farther away from the hot thing.