来自MSN16 天
Earth May Have Had a Ring Like Saturn Once
where a global deep freeze saw average temperatures rapidly plummet by 8°C (14.4°F)—a climate shift known as the Hirnantian Icehouse. The research, led by Andrew Tomkins, a professor in the ...
来自MSN3 个月
Scientists Find Evidence Earth Used to Have a Ring Like Saturn
The work not only provides a compelling explanation for these puzzling craters, but could also explain a period of cooling known as the Hirnantian Icehouse, which is considered one of the coldest ...