An ongoing act of cosmic cannibalism may be responsible for the strange appearance and unprecedented behavior of a gigantic star nicknamed Nasty 1.
Astronomers may have solved the decades-long cosmic murder mystery of what kills most galaxies in the universe: They are strangled to death, so they can no longer create new stars.
Astronomers studying the globular star clusters orbiting the giant elliptical galaxy Centaurus A (NGC 5128) have stumbled upon a fascinating discovery -- the clusters are too massive.
Astronomers have found a quartet of quasars embedded in a single cloud of cold gas, a discovery that challenges currently held theories about how these rare objects form.
A galaxy far, far away — farther, in fact, than any other known galaxy — has been measured by astronomers.
Hubble’s scientific bounty has benefited a wide range of astronomical and astrophysical fields, including the study of planets, moons and small icy bodies in the outer solar system and the cosmological history of the universe. Here’s a look at a few of Hubble’s greatest hits.
Astronomers have discovered 11 entire galaxies that have undergone some unpleasant gravitational turbulence and flung from their home clusters, marooned in intercluster space.
New research reveals just how invisible this stuff is, even to itself.
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