One of the most powerful black holes in the observable universe has been revealed by NASA's Chandra X-Ray Observatory.
From galaxies to moonrises, the Astronomy Photographer of the Year images offer stunning views of the universe.
The atmospheric imaging assembly has captured a shot of the sun every 12 seconds, in 10 different wavelengths, for the past three years.
The closest look ever at a new comet will happen when the mountain-size comet Siding Spring buzzes past Mars this weekend.
Virgin's commercial passenger space flight venture is soon to begin a new round of test flights for spaceliner SpaceShipTwo.
Even our sun isn't immune from cosplay fever. A recent NASA image captures a perfect storm of magnetic fields that give the sun the look of a carved Halloween pumpkin.
An unusual total lunar eclipse happening early Wednesday morning US time will turn the moon a coppery red and lucky watchers may even see a simultaneous sunrise and moonset.
A cloud of solar material stretching across the sun has caught NASA's attention, and it's a wonder to behold.
While we typically think of black holes as death pits from which nothing can escape, recent studies suggest black holes play a pivotal role in creating stars. Could one have created our sun?
By using the world's preeminent telescopes, astronomers peer behind a curtain of dust to find a giant star-making factory known as "Sparky."