Saturn's rings may be remains of ancient moon

日期:2018-02-20 07:00:26 作者:萧眙弭 阅读:

WHY are Saturn’s rings so spectacular? It could be that the planet managed to cling onto a moon when all the other gas giants in our solar system had already lost theirs. Today’s rings formed when the moon was smashed up. Sebastien Charnoz and colleagues at the University of Diderot, Paris, suggest it was during the “late heavy bombardment”, 700 million years after Saturn formed,