than 2.2 billion light-years away, for more than 13 hours. The gravity of the cluster’s trillion stars, plus dark matter, acts as a 2-million-light-year-wide “lens” in space. This “gravitational lens” ...

The first of a set of unprecedented, super-deep views of the universe from an ambitious collaborative program called The Frontier Fields is being released today at the 223rd meeting of the American ...

Add Yahoo as a preferred source to see more of our stories on Google. Hubble Space Telescope gleams against the darkness of space and the curve of the Earth. The most famous telescope in history has ...