Space, astronomy, rockets and the physics of it all.
Tuesday, September 15, 2026 · UTC
Asteroids & Planetary Defense

Mercury may have shrunk 30% more than thought, study says

A new estimate from a study led by Hokkaido University and the German Aerospace Center suggests the planet's radial contraction is greater than previous figures.

Planetary Science Reporter
Share on X
Stands on 3 placed sources from 3 publishers.
Mercury's shrinkage could be 30% greater than previously believed, according to scientists from the German Aerospace Center's Institute for Planetary Research.[1]