Mercury is shrinking faster than we thought. What's going on inside of it?

Solar System Mercury Mercury is shrinking faster than we thought. What's going on inside of it? News By Robert Lea Published 10 September 2026 "It made us think that there's a process obscuring shortening structures."

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Click for next article An illustration of a shrinking Mercury. (Image credit: Robert Lea (created with Canva)) Copy link Facebook X Whatsapp Reddit Pinterest Flipboard Email Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter Wrinkles on the surface of Mercury have revealed that the closest planet to the sun is shrinking faster than scientists thought.