Reasons Behind Mercury's Size Change

A recent study illustrates patterns on the surface of Mercury indicating that it was once a larger planet and has shrunk more than previously believed, with a contraction rate estimated between 10% and 30%. It was found that this contraction caused wrinkles and fractures on the planet's surface, with many of these features likely obscured by debris resulting from impacts over billions of years. The upcoming "BepiColombo" mission, which will approach Mercury later, will help measure the extent of this contraction more accurately and deepen our understanding of the planet's interior evolution. It will provide detailed data on the terrain and surface deformations, aiding in unraveling the planet's mysterious secrets.

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