Mercury Appears To Be Shrinking
Despite being the close major planet to Earth , andall other planetsin the Solar System , in fact , Mercury fix little in the way of attention . It only has itself to blame , being an inhospitable scorched satellite with temperatures reaching 430 ° C ( 800 ° F ) in the 59 - earthly concern - day - long Mercury day . Even ignoring its lack of air , it ’s not exactly the planet you need to one day visit ....