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” ...

This zoom sequence takes the viewer from a wide panorama of the sky deep into the faint southern constellation of Fornax (The Furnace). This is the site of the Hubble Ultra Deep Field, a tiny patch of ...