Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 ...

For a few evenings around 28 February, every planet in the solar system will be visible in the night sky, thanks to a rare great planetary alignment. Here's how to make sure you don't miss this ...

Probes are space crafts with cameras to send images ... So, even though Mercury is closer to the Sun, Venus is the hottest planet in the solar system. Mars has a hard, rocky surface with lots ...

That path is called the ecliptic, and it exists because all planets in our solar system orbit around the sun on roughly the same plane. You may like Watch 'planetary parade' online for free on Jan ...

Interstellar material has been discovered in our solar system, but researchers continue to hunt for where it came from and ...