What is so spectacular about this Martian aurora discovery, considering that scientists have captured and reported several ...

This week, an old astronomical controversy is renewed as researchers present new evidence for a hidden "Planet X" in our ...

Discovered in 1930, Pluto was long considered our Solar System's ninth planet, but was unseated in 2006 after the discovery ...

NASA researchers have discovered evidence of tectonic activity on Venus by re-examining decades-old radar data. The findings ...

Vast, quasi-circular features on Venus's surface may reveal that the planet has ongoing tectonics, according to new research ...

Astronomers believe that Planet Nine could be 5-7 times the size of Earth and situated more than 200 times farther from the sun than our planet. It is believed to orbit the Sun in 10,000 to 20,000 ...