The universe began with a vast explosion that generated space and time, and created all the matter and energy in the universe. Exactly what triggered this sudden expansion remains a mystery.

It's been a long, strange trip for this universe we call home. Follow its development and take a peek at what's ahead with the Mysteries of Deep Space interactive timeline. Simply click on the ...

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

"Leo P provides a unique laboratory to explore the early evolution of a low-mass ... the primordial galaxies of the early ...