So in some sense, alien worlds were not first discovered in the 1990s or even the 1980s. It took nearly a century to fully ...

For the better part of a century, we believed there were nine planets in our solar system, with Pluto being the farthest from the sun. Since the discovery of more Pluto-sized dwarf planets, that ...

Decades of constant X-ray emission from the Helix Nebula’s white dwarf suggest debris from a Jupiter-sized planet steadily rains upon the star.

Why was Pluto reclassified as a dwarf planet? One might think that it’s purely a matter of size. Mercury, the smallest of the ...

The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects.

This is particularly puzzling, as a vast majority of meteorites can be traced to some well-known parent body—whether that be ...

New research suggests that life could have the time and energy to arise on Earth-like worlds in the rapidly shrinking ...

Florida Tech's Caldon Whyte is two years into a lengthy universe exploration to earn his Ph.D. in space sciences. After ...

The latest data suggests there may be "a subtle, regular change in the X-ray signal every 2.9 hours, providing evidence for the remains of a planet exceptionally close to the white dwarf," the CXC ...