A galaxy is a massive, gravitationally bound system. It contains stars, stellar remnants, interstellar gas and dust, and a ...

Discover 25 mysterious space events scientists are tracking right now. From waking black holes to strange signals, explore ...

A luminous swirl set against the deep black of space, the barred spiral galaxy IC 486 glows with a soft, ethereal light in ...

Astronomers reveal new insight into an iconic supernova remnant's evolution, structure and pulsar-driven growth over 25 years ...

Viewing Saturn in complementary wavelengths, the two space telescopes reveal more about what makes up the layers of Saturn's atmosphere.

The Hubble Space Telescope was designed to free astronomers of a limitation that has plagued them since the days of Galileo—Earth's atmosphere. Shifting air pockets in the atmosphere block and distort ...

Astronomers have discovered an exceptionally rare radio galaxy that has three distinct pairs of radio lobes. This system falls into a subpopulation of radio galaxies known as "triple-double" radio ...

Astronomers have spotted the most distant and brightest "space laser" ever seen, blasting out from a distant galaxy collision ...