Test your knowledge on our solar system, from the biggest and smallest planets to the behemoth mountain on Mars.

We take a look at the current best predictions for what the solar system will look like throughout the rest of the Sun's life ...

With 8 planets now known, the thoughts of astronomers ... than any of the planets in the outer solar system. Nevertheless, because it orbited the Sun like a planet, it was classified as a planet ...

The Sun is an incandescent but benevolent dictator. For billions of years, it's kept our Solar System well organized and ...

It includes the three furthest planets in our solar system. There will be six planets ... Hemisphere will be just after sunset at around 8:30 p.m. local time. You still might be able to catch ...

The asteroid belt is messy and sometimes a threat to our solar system’s planets, so on this episode of Dead Planets Society it’s time to tidy it up into a single asteroid world ...

When 'Oumuamua traversed our solar system in 2017 it was the first confirmed Interstellar Object (ISO) to do so. Then in 2019 ...

In the next decade, researchers will start probing the atmosphere of planets as small as Earth and Venus orbiting nearby stars. But although these two solar system planets are similar in size and ...

Samples collected from the near-Earth asteroid Ryugu have revealed clues about a primordial magnetic field that helped asteroids, planets and moons grow in our solar system. Analysis of three ...

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.