Nathalie Cabrol

So these are good places.

That's why we're sending the rovers in those places, ancient lakes and impact craters, and places where you have very old rocks there.

And yes, a big rock that can be metal or rock, or it can be a comet as well, mostly ice.

Both.

It's actually both.

Interestingly enough, the building blocks of life, the bricks, the stuff we are made of, carbon, hydrogen, oxygen, and nitrogen, and phosphorus, they were included in

on our planet they were built in just because our planet is made of this kind of rocks asteroids and comets coming together by what we call accretion so they were built in when an asteroid comes there is a lot of destruction going on but at the same time those rocks they bring with them those bricks of life and they create lots of energy and if the environment around

is favorable, you might possibly have some seeding going on.

That's one of the aspects of what we call panspermia, which is the fact that comets and asteroids have the building blocks of life embedded in them, and that given favorable conditions, they might be able to seed planets.

This is a theory.

Well, but that's the thing.

Panspermia is a vector, potential vector, which means that it actually distributes the stuff of life left and right, but it doesn't explain the origin of life.

It's not the environment itself.

It just promotes maybe, and we still have to prove this.

But what we know is that the stuff we are made of

is very abundant all over the place, including in interstellar medium.

So it's all over.

It's all over.

The idea is that maybe it just waits to have the proper environment.

And we know what it needs here on Earth.