Astronomers get glimpse of star 9 billion light-years away

摘要

The most distant star ever observed has been spotted, and its light comes from across two-thirds of the universe. That puts the star 9 billion light-years away. Patrick Kelly of the University of California, Berkeley and colleagues found the star in Hubble Space Telescope images of the galaxy cluster MACS J1149. In April and May 2016, Kelly's team saw a mysteriously fluctuating point of light in the galaxy cluster's vicinity.