The second-largest asteroid in the solar system is Vesta, and it may be a piece of an ancient lost planet. […] ...

An alternate explanation that fits the evidence is that Vesta was once part of a planet – but which planet that might been remains a mystery.

When you buy through links on our articles, Future and its syndication partners may earn a commission. For decades, scientists thought that Vesta was a protoplanet rather than an asteroid.

Twenty years ago, the US Congress instructed NASA to find 90 percent of near-Earth asteroids threatening Earth.

Tianwen, which means "questions to heaven," is the name given to China's program of robotic Solar System exploration. Tianwen ...

A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow up 2,000 Earths.

A gargantuan asteroid impact on Ganymede, the solar system’s largest moon ... We’ll know a lot more in just seven short years. asteroids Ganymede Jupiter Icy Moons Explorer moons Get the ...

Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million ...

In a new study using the James Webb Space Telescope, scientists have discovered a hidden population of tiny asteroids in our solar system. These objects might ... The James Webb Space Telescope is the ...