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Among the inner solar system, Earth is the only planet that experiences plate tectonics. A new study, using convection models, shows that Earth’s collision with the protoplanet Theia some 4.5 billion ...

Everything we thought we knew about the moon's origins may be wrong, new research suggests. Ever since we landed the first humans on the moon, scientists have thought that our lone lunar companion ...

A recent theory has emerged suggesting that the answer to Mercury’s unusually large metallic core may lie in the early history of our solar system. This theory proposes that a soft collision between ...