Peering through the gravitational lens of a massive galaxy cluster 5 billion light years from Earth, astronomers have discovered a single, blue supergiant star 9 billion light years away, farther …read more
Source:: Science
Peering through the gravitational lens of a massive galaxy cluster 5 billion light years from Earth, astronomers have discovered a single, blue supergiant star 9 billion light years away, farther …read more
Source:: Science