天文学家发现,在大约7万年前,一颗昵称为“肖尔茨星”的红矮星穿过了太阳系外围的奥尔特云,与太阳上演了一回“亲密接触”。主持这项研究的美国罗切斯特大学的天文学家埃里克·玛玛杰克表示,7万年前,肖尔茨星曾以约80千米/秒的速度缓慢地“飞掠”过外太阳系,并远离我们而去。如今,它在距离太阳系20光年的地方。这颗红矮星 Astronomers found that about 70,000 years ago, a red dwarf, nicknamed “The Shultz Star,” crossed the Oort cloud around the solar system and staged a back-to-back “intimate encounter” with the sun. Eric Mamajack, an astronomer at the University of Rochester in the United States who presided over the study, said that 70,000 years ago, Shultz had slowly “dumped” its outer solar system at about 80 km / s And away from us. Today it is 20 light-years away from the solar system. This red dwarf