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Tab Preisel

๐Ÿ‘ค Speaker
17 total appearances

Appearances Over Time

Podcast Appearances

Short Wave
Where did our moon come from?

This moon capture idea that there was already a moon body somewhere in the solar system that sort of got captured up there.

Short Wave
Where did our moon come from?

into Earth's gravitational orbit.

Short Wave
Where did our moon come from?

One thing that the Apollo samples have really done is exemplify the value of sample return missions that, you know, even after decades and decades of study, we're still learning new things about the moon and Earth-moon system and developing these alternative scenarios for the Earth-moon system forming impact.

Short Wave
Where did our moon come from?

Hmm.

Short Wave
Where did our moon come from?

I live in the realm that everything is still possible.

Short Wave
Where did our moon come from?

And it's really, really hard to completely objectively rule something out to 100% certainty.

Short Wave
Where did our moon come from?

So I'm still happy with that.

Short Wave
Where did our moon come from?

That magma ocean concept was really developed through Apollo missions and sample return.

Short Wave
Where did our moon come from?

And it is a new perspective that we've added to kind of all the rocky planets in our solar system.

Short Wave
Where did our moon come from?

The Earth may have had a magma ocean, Mars, Mercury, Venus.

Short Wave
Where did our moon come from?

The surface of the moon is this archive of deep time that we have just completely lost.

Short Wave
Where did our moon come from?

If we want to study the ancient sun, cosmic rays and galactic processes, they're being recorded on the lunar surface and in the lunar surface materials on Earth.

Short Wave
Where did our moon come from?

Anything that was happening, you know, four and a half billion years ago is gone.

Short Wave
Where did our moon come from?

We just do not have that rock record.

Short Wave
Where did our moon come from?

When you think back to the amount of surface we've been able to explore through the Apollo missions, it sums to essentially like a commute from Providence, Rhode Island to Boston, Massachusetts.

Short Wave
Where did our moon come from?

So it's like 45 minutes.

Short Wave
Where did our moon come from?

And I don't say that to de-emphasize the immense value of the Apollo missions, but to really highlight how very little of the lunar surface we've been able to explore.