“He was very taken with the thought that no phenomenon becomes a true phenomena until it has been observed,” Wald told Salon ...

We had this very apocalyptic feeling, just finding out that our show was going to end in Season 5 instead of what we would’ve ...

Found less than a billion years after the Big Bang, these massive objects are upending astronomers’ timeline for how early galaxies formed.

NASA's Chandra and NuSTAR telescopes have teamed up to study a supermassive black hole-powered quasar that could have played ...