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Scientists discover huge, heat-emitting blob on the far side of the moon (www.livescience.com)

submitted 1 year ago by [email protected] to c/[email protected]

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Scientists have discovered an anomalous blob of heat on the far side of the moon.

This mysterious hotspot has a strange origin: It's likely caused by the natural radiation emanating from a huge buried mass of granite, which is rarely found in large quantities outside of Earth, according to new research. On the moon, a dead volcano that hasn't erupted for 3.5 billion years is likely the source of this unusual hunk of granite.

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[–] [email protected] 2 points 1 year ago

@Arotrios @briankrebs It‘s the base from Iron Sky!

[–] [email protected] 2 points 1 year ago (2 children)

would this granite constitute evidence that the moon struck earth at some point?

[–] [email protected] 11 points 1 year ago

The moon is hypothesized to be made of material from when Theia (hypothetically) struck Earth billions of years ago. Most of the matter became the Earth and some spun out into space and became the moon.

[–] [email protected] 3 points 1 year ago (1 children)

As someone else already commented, the leading theory since several decades (all other theories about the origin of Earth's moon fell by the wayside once we went to the moon and brought back moon rocks for analysis) is that Proto-Earth collided with a roughly Mars-sized object we're calling Theia. As a result, the material from both was mixed. Part of that mix of two (proto-)planets got ejected and formed the moon, while the rest formed the Earth (with smaller objects forming temporarily in unstable orbits and raining down as meteorites on both the Earth and the Moon).

Here's a Wikipedia article on the topic

[–] [email protected] 4 points 1 year ago* (last edited 1 year ago) (1 children)

Some podcast I was listening to was saying something to the effect that one of the reasons we have such a diverse mix of elements close enough to the surface to easily mine was thought to be due to that collision. Interesting stuff.

[–] [email protected] 3 points 1 year ago (1 children)

This is interesting. Sounds like it makes finding other intelligent beings much less likely, which is a bit sad I guess.