Jupiter is huge when it comes to planets in our solar system, but it turns out there's actually an upper limit when it comes ...

Some stargazers are calling it a planetary parade: Every other planet in our solar system can be seen in the sky tonight.

Test your knowledge on our solar system, from the biggest and smallest planets to the behemoth mountain on Mars. When you purchase through links on our site, we may earn an affiliate commission.

Auroras are beautiful phenomena on Earth, but they aren't specific to this planet. In fact, they appear on many other planets ...

For billions of years, it's kept our ... The solar system is approximately 4.6 billion years old. Astronomers believe that roughly 100 million years into its existence, the planets first began ...

Some 2,600 light-years from our own Solar System dwells one of the most peculiar planetary systems in the entire galaxy.

A planet parade is when several of our solar system's planets are visible in the night sky at the same time. There will be six planets visible this time around, including Venus, Mars ...

January's sky brings a planet parade, Mars opposition, and the Quadrantid meteor shower. Enjoy Venus and Saturn's close ...

we found that our solar system contains two different types of dark comets.” Inner dark comets can be found within the inner solar system, which includes the planets Earth, Venus, Mars and ...

The odd atmosphere of a fledgling exoplanet is causing astronomers to question leading theories of how planets form.