A large mass of granite that has been slowly releasing heat has been discovered buried beneath a crater on the Moon. This is not science fiction. It is ancient volcanism. The Moon once had lava fields and eruptions, but astronomers had never actually identified a more traditional Earth-like volcano until they examined what lay beneath the Compton and Belkovich craters on the far side of the Moon. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

Granite is not very common outside of Earth so finding it on the Moon is very exciting. On our planet, it forms deep beneath the surface, usually under a volcano where magma can cool down and crystalize. To make granite, having water and plate tectonics helps a lot. The team used a combination

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