Regina Barber

Like Theia's?

Many Theia's?

Could have come for us?

Well, instead of like a Mars size object, like a whole bunch of like smaller things.

So Theia is just flying around near the sun, like with all that other debris making all the planets because they're all still forming.

And it comes towards proto-Earth and it just smashes into it.

And the result of this collision is tons of material just flying off of proto-Earth.

And Theia probably exploded.

Yeah.

So all of this debris starts to, like, orbit Earth, kind of like that planetary disk that made all the planets orbiting the sun, but now this disk is around the Earth.

And the disk starts to clump.

So, like, over time, gravity is pushing in all directions.

It's making the clumps turn into things that are more spherical.

And that's actually one of the criteria.

To be a planet, you have to be spherical.

But remember, these processes are really hot.

So in this hypothesis, when the moon does coalesce, it also has this magma ocean covering the entire surface.

That's Tab again.

And he said instead of icebergs, they were like these giant chunks of rock.

He called them rockbergs floating in this magma ocean.