Oceans on alien worlds may form when the air explodes in flames

 作者:昝嵛经     |      日期:2019-03-03 05:12:00
By Leah Crane THE right combination of gases could put exoplanets through an explosive sea change. Hydrogen and oxygen in an atmosphere can ignite and leave behind water, dumping oceans onto a planet’s surface. John Lee Grenfell at the German Aerospace Centre in Berlin and his colleagues calculated how oxygen could build up in a large, rocky planet’s atmosphere and combine with pre-existing hydrogen to create water. They found that at high enough temperatures, the two could combust or explode,