The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

If you were to perfectly follow the steps in An Idiot's Guide to Making a Solar System, you should eventually find yourself ...

Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

Discover the fascinating findings from asteroid Bennu: pristine salt minerals reveal the presence of liquid water in the ...

When astronomers found a large world farther out than Pluto, it became one of the final nails in the coffin of our ninth ...

NASA’s Juno mission found Io’s biggest volcanic eruption ever. The explosion was stronger than all Earth’s power plants ...

The joint European-Japanese mission is only the second survey of Mercury, the least explored planet in the inner solar system.

Loki Patera is 202 kilometres (126 mi) in diameter, covers 20,000 sq km (7,700 sq mi), and was the largest volcanic feature found on Io until these new observations revealed the hot spot in the south ...

Stunning pictures of Mercury have been published revealing the sunlit plains and possibly icy craters of the smallest planet in the solar system ... The close-up images beamed back to Earth ...

Comet ATLAS (C/2024 G3) came three times closer to the sun than Mercury on January 13—and this may have changed it ...