Episode 212 - The History of Full Moon Madness

[laughs] Before we get into the mythology, it's worth establishing what a full moon actually is.

The moon doesn't produce its own light.

What we see when we look at the moon is sunlight reflected on the moon's surface.

What?

As the moon orbits Earth, we see different portions of its illuminated half, producing the lunar phases.

A complete cycle takes about 29 and a half days.

That's why, of course, you know, the moon f- the full moon is not on the same day every month.

The full moon occurs when the moon is positioned opposite the sun from Earth, so the side facing Earth is fully illuminated.

This regular cycle made the moon useful for measuring time long before modern calendars.

Lunar cycles were incorporated into religious festivals, calendars, agricultural practices, and systems for tracking the passage of time.

Ancient societies also observed that the moon appeared to coincide with other natural cycles.

The tides, for instance, were visibly connected to the moon.

So it wasn't unreasonable, within the scientific understanding of the ancient world, to wonder whether the moon might affect other things on Earth as well.

So recently I, I learned a fact that I found super interesting.

You know how we always see the exact same side of the moon?

The li- the, not the dark side.

That's the far side.

Right, the, right, the far side of the moon faces away from Earth.

Yeah.

So, you know, just to, uh, quick, quick catch-up, the rate of rotation of the moon synchronizes with the rate of orbit that the moon does around the Earth.

Uh, and so that means that it's, we always see the exact same side, 'cause even though it's technically spinning, it's also orbiting.

I always found it just so incredible that those two things synced up so perfectly.

It's kind of bonkers.

But here's the thing, it's not.

Oh.

[laughs] Before we get into the mythology, it's worth establishing what a full moon actually is.

The moon doesn't produce its own light.

What we see when we look at the moon is sunlight reflected on the moon's surface.

What?

As the moon orbits Earth, we see different portions of its illuminated half, producing the lunar phases.

A complete cycle takes about 29 and a half days.

That's why, of course, you know, the moon f- the full moon is not on the same day every month.

The full moon occurs when the moon is positioned opposite the sun from Earth, so the side facing Earth is fully illuminated.

This regular cycle made the moon useful for measuring time long before modern calendars.

Lunar cycles were incorporated into religious festivals, calendars, agricultural practices, and systems for tracking the passage of time.

Ancient societies also observed that the moon appeared to coincide with other natural cycles.

The tides, for instance, were visibly connected to the moon.

So it wasn't unreasonable, within the scientific understanding of the ancient world, to wonder whether the moon might affect other things on Earth as well.

So recently I, I learned a fact that I found super interesting.

You know how we always see the exact same side of the moon?

The li- the, not the dark side.

That's the far side.

Right, the, right, the far side of the moon faces away from Earth.

Yeah.

So, you know, just to, uh, quick, quick catch-up, the rate of rotation of the moon synchronizes with the rate of orbit that the moon does around the Earth.

Uh, and so that means that it's, we always see the exact same side, 'cause even though it's technically spinning, it's also orbiting.

I always found it just so incredible that those two things synced up so perfectly.

It's kind of bonkers.

But here's the thing, it's not.

Oh.