Star studied

日期:2019-03-07 07:01:09 作者:屈突缶冼 阅读:

ASTRONOMERS have caught the first close-up view of the surface of a star other than the Sun. They studied the distant star, some 25,000 light years away, with the help of a cosmic magnifying glass known as a gravitational lens. Objects passing between us and distant stars bend light rays heading our way. This can brighten the image of a distant star by focusing its light. Lensing events are rare, and so easily missed. However, if the lens is a binary star, a second lensing event may follow the first. Last June,