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Questions tagged [contact-binaries]

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Do contact binaries such as Ultima Thule affect our current theories on how the Moon formed?

While I was reading about Ultima Thule, I was wondering if the discovery of contact binary objects had any effect on our current theories of how the Moon formed?
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Can any type of stars be contact binaries?

In this article Shortest distance between stars it is mentioned that Some double stars can actually be in contact with each other. This occurs when a red giant star has a white dwarf star ...