๐ช Mercury is shrinking super fast, new study shows
Mercury is rapidly shrinking, a phenomenon scientists are now better able to track. This change was observed by missions like Mariner 10 and Messenger around the planet. A 2013 estimate suggested an 11 km shrinkage, but a new study now indicates the size reduction is closer to 23 km. This shrinkage is believed to be caused by the planet's cooling core and crust buckling. Studying Mercury is key because scientists suspect Mars and our Moon might also be shrinking. ๐ง