After surveying some promising galactic candidates, an astronomer has concluded that there is little to no evidence for any super-advanced alien civilizations in our local universe.
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.
Europe's XMM-Newton telescope took an X-ray scan of the Milky Way's core, capturing some dazzling high-energy delights.
Astronomers have discovered the smallest supermassive black hole lurking in the center of a dwarf galaxy around 340 million light-years away. Small it may be, but it could help to unlock some pretty hefty black hole mysteries.
A study of more than 200,000 galaxies shows that the universe is producing half as much energy as it did 2 billion years ago and continues to fade.
A new map of the Milky Way has revealed a surprising fact about the stars living in our galaxy -- nearly a third have moved far from their stellar birthplace.
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