The size of the Solar System and the Universe is truly beyond our comprehension. When we think of the vastness of space, we ...

When most people think of our Solar System, they think of the 8 planets officially recognized by the International Astronomical Union (IAU). But what if I told you there are at least 40 planets, and ...

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, researchers say.

Learn about the recently discovered trans-Neptunian object that may eventually join Pluto as a dwarf planet, found at the edge of our solar system.

The planets in order from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. If you include the ...

The double star system is called HD 135344 AB and it's about 440 light-years away from Earth. A and B are both young stars, ...

Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new ...

A giant gas planet comparable in size to Saturn exists around a small red dwarf star. The discovery is beyond the scope of ...

Comet or asteroid heading for the Sun is only the third time an interstellar object has been spotted inside our group of ...

The solar wind pushes some of the gas and dust away from the comet, forming those beautiful tails we see. A comet actually ...