To celebrate 100 years since Einstein formulated his theory of general relativity, we celebrate the beautiful observations created by a spacetime phenomenon known as gravitational lensing.
Shimmering deep inside a cosmic supervoid is MCG+01-02-015, a pristine galaxy that is the undisputed galactic loner of the universe.
The Hubble Space Telescope has taken its deepest-yet look into the cosmos to see some of the earliest galaxies that popped into existence only a few hundred million years after the Big Bang.
See just how well Hubble is doing after 25 years in orbit.
In a galaxy, 600 million light-years away, a black hole deathmatch is ripping up spacetime, exposing some fascinating dynamics at the heart of a powerful quasar.
From round disks to oval clusters; many galaxies in the Universe have undergone a dramatic transformation over the past eight billion years or so.
Three supernovae have been found erupting alone in the depths of 'intracluster' space -- a cosmic first.
On Wednesday, President Barack Obama mentioned something curious in a tweet -- it was a message about the cosmos.
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