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"A new analysis of isotopes found in lunar minerals challenges the prevailing view of how Earth's nearest neighbor formed. Geochemists looked at titanium isotopes in 24 separate samples of lunar rock and soil, and found that the moon's proportion was effectively the same as Earth's and different from elsewhere in the solar system.
I understood that planets and bodies were round because when they were loose particles of matter, and before they had formed properly, all the pieces clumped together around a central point, so making it round.
Now, if the Moon was a piece of the earth, wouldn't the Earth and Moon be kind-of NOT roundish?
Actually, what do scientists know about the Moon? They have no idea about the inside, they have no idea about how all the different kinds of rilles form (apart from the theory of being lava tubes(?) ).
Now, if the Moon was a piece of the earth, wouldn't the Earth and Moon be kind-of NOT roundish?
That's because the moon and the Earth have sufficiently strong gravitational pull to make them round. The mass of the planet always wants to get closer to its center of gravity, and the closest way to do that is to form a sphere. If you have a cube floating in space, if its big enough, overtime it will form a sphere by itself.
That's because the moon and the Earth have sufficiently strong gravitational pull to make them round. The mass of the planet always wants to get closer to its center of gravity, and the closest way to do that is to form a sphere. If you have a cube floating in space, if its big enough, overtime it will form a sphere by itself.
That's because the moon and the Earth have sufficiently strong gravitational pull to make them round. The mass of the planet always wants to get closer to its center of gravity, and the closest way to do that is to form a sphere. If you have a cube floating in space, if its big enough, overtime it will form a sphere by itself.
Seems like if both were molten at the time of impact, and the impactor was not so different in composition, we would see some magma sloshing and some magma staying. Perhaps it is like a cue ball and the momentum lodged a bit right out the other side of the earth. Regardless, it was pretty toasty.
Anyone checked this out? Give you an idea of the kinetic energy and consequences of meteor strikes.
"A new analysis of isotopes found in lunar minerals challenges the prevailing view of how Earth's nearest neighbor formed. Geochemists looked at titanium isotopes in 24 separate samples of lunar rock and soil, and found that the moon's proportion was effectively the same as Earth's and different from elsewhere in the solar system.
George Darwin (son of Charles Darwin) first proposed the giant impact hypothesis in 1898. Where an object roughly the size of Mars, called Theia, impacted with earth and formed our moon.
The impact would have combined the molten cores of both Earth and Theia, while flinging lighter material into space to form an accretion disk and eventually our moon. They estimate this impact occurred approximate 4.53 billion years ago.
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