According to new simulations, many, even most, planets get ejected from their star early in their history Star Trek ...

Planets' temperatures are largely influenced by their structural characteristics and proximity to the Sun, however, Venus ...

Each of the planets, labeled b, c, d, and e, has a mass between 20% and 30% of Earth's, making them among the smallest yet ...

We often focus on space observatories that peer beyond Earth. But the vast majority of satellites stare right back at us.

The world of Sailor Moon does not just relate to our own solar system, but the many unknown planets from the original story ...

An asteroid discovered over 200 years ago which is roughly the size of Germany would have catastrophic consequences for life ...

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

Slideshows ...

The two exoplanets, or planets outside of our solar system, orbit a star called TOI-1453, which is slightly cooler and ...

All planets are made of gas, ice, rock and metal, and models of how planets form usually assume that these materials don't ...

The most elusive planetary aurora in the Solar System has finally been revealed in all its gently glowing glory.

The NEO Surveyor fulfills a 2005 act of Congress ordering NASA to catalog 90% of near-Earth objects larger than 459 feet, ...