A planet about the size of Neptune but situated 33 times closer to its parent star than Earth orbits the sun is losing its atmosphere, forming a fat, comet-like tail in the process.
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.
For the most part, Pluto’s four small moons appear to orbit harmoniously and precisely around the equatorial region of the dwarf planet, but appearances can be deceiving.
A galaxy far, far away — farther, in fact, than any other known galaxy — has been measured by astronomers.
As we celebrate Hubble's 25th year in space, let's have a quick rundown of some of the space telescope's key statistics.
It's been an eventful 25 years for what turned out to become the world's best-known telescope and perhaps among the most productive science instruments ever made. Here's a look at Hubble's life in pictures.
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.
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