Everything you didn't know about the Moon
Aug 9, 2026 #astrophysics #osnova #space
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Did you know that the Moon is moving away from us? Every year, it moves away from the Earth by about 3.8 centimeters—small, but inexorably, and this has been happening for billions of years.
The reason is the tides. The Moon's gravity raises tidal bulges on Earth (the same high and low tides). But: the Earth rotates on its axis faster than the Moon can orbit it. This rotation drags the near bulge forward a little—it ends up not directly under the Moon, but slightly ahead of it. This shifted hump pulls the Moon forward along its path, transferring energy to it—and, accelerating, it climbs into an ever-more-distant orbit. And Earth itself pays for this: by transferring rotational energy to the Moon, it gradually slows down, and our days become longer.
We explore this with Oleg Kuskov, a specialist in the geochemistry and internal structure of planets, the Moon, and the satellites of the giant planets. How can we even understand what's inside the Moon if we can't get there? Is it true that its "seas" are solidified lava, not water? Why does Earth have a huge iron core, while the Moon has a tiny one? How did the Moon even come to be so close to Earth—and why are scientists still debating its origin?
And why do the moons of Jupiter and Saturn, where there's perpetual cold and no sunlight, hide oceans hundreds of kilometers deep, dozens of times deeper than Earth's, beneath their icy crust? One of Saturn's moons spews water into space, while Titan has methane rivers and lakes. Is there any life there—and are we alone in the Solar System?
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0:00 - Main Questions of the Episode
0:19 - Support Us with a Like
0:32 - Is the Moon Moving Away from Us?
2:13 - Why is the Moon Moving Away?
3:15 - The Moon and Space in Ancient Greece
8:49 - Habitability of the Moon
12:41 - Structure of the Moon
14:20 - Moonquakes
16:33 - Lunar Seas
19:22 - The Moon's Crust
22:51 - The Moon's Mantle
25:33 - The Core of the Earth and the Moon
30:57 - How the Moon Formed
38:24 - Theia and the Impact with Earth
40:36 - Other Theories of the Moon's Creation
45:36 - What Could the Theia Impact Have Been Like?
46:53 - The Chemistry of the Moon and Earth
47:48 - The Composition of Mars
49:02 - Moons in the Solar System
51:28 - Moon Capture
52:33 - Ganymede
53:02 - Callisto and Titan
54:28 - Water on Moons
55:05 - The Largest Volcano - the Moon Io
56:20 - The Moon Europa and Its Ocean
57:27 - Ganymede and Callisto - Icy Moons
59:37 - Hot Ice
1:00:33 - How We Found Out There Is Water on Moons
1:02:11 - Titan's Atmosphere
1:03:52 - Organics on Titan
1:04:47 - Why Not All Moons Can Maintain an Atmosphere
1:06:03 - The Snow Line of Space
1:07:34 - The Soot Line in Space
1:08:04 - Potential Life on Moons
1:09:31 - Geysers of Enceladus
1:11:05 - Thanks for watching!
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#basis #space #astrophysics #moon #science #universe
Boris Yedentsky and cosmochemistry specialist Oleg Kuskov discuss the evolution of the Earth-Moon system. The episode examines historical understanding of the moon, modern scientific hypotheses about its formation, and current data on the Moon's internal structure obtained through seismic surveys and soil sample analysis.
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