Messier 2 is located in the constellation of Aquarius (The Water-Bearer), about 55 000 light-years away. It is a globular cluster, a spherical group of stars all tightly bound together by gravity.
Despite having only half of a brain, certain neural connections appear to be stronger than those in a fully intact brain, a new study suggests.
This craggy fantasy mountaintop enshrouded by wispy clouds looks like a bizarre landscape from Tolkien's The Lord of the Rings.
This image shows the exoplanet WASP-12b - an alien world as black as fresh asphalt, orbiting a star like our Sun. Scientists were able to measure its albedo: the amount of light the planet reflects.