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

That strange planet is right next door and is called Mercury. Mercury travels around the Sun faster than any other object in the solar system, completing a full orbit every 88 days. It is very ...

Now European Southern Observatory (ESO) thinks one of the objects floating along the main belt might be the smallest dwarf planet in our solar system — an asteroid known as Hygiea. Hygiea isn ...

Astronomers used james webb telescope data to discover tiny main-belt asteroids, improving asteroid tracking and planetary ...

Astronomers have found a way to spot the smallest, 'decameter,' asteroids within the main asteroid belt. They used their approach to detect more than 100 new asteroids, ranging from the size of a bus ...