The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

THE search for alien life across our Solar System and beyond has so far kicked up nothing intelligent – let alone microbial.

Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

It is not often that all the planets in the Solar System other than ours are lined up across the night sky for us to see.

one which can offer superb views of the other bodies in the solar system. But which one to choose? We've got you covered with our guide to the best telescopes for seeing planets. Now's a great ...

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike anything found in the Solar System ... on the ice covered moons of Uranus.

NASA's OSIRIS-REx mission discovered molecules vital to life and a history of saltwater on asteroid Bennu. The findings ...

Mars's moon Phobos is so strange that no one knows how it formed. But a forthcoming mission could solve this mystery - and a host of other puzzles connected to the solar system's deep past ...

Mars' southern hemisphere absorbs a lot of the sun's energy during the Red Planet's spring, and that may be causing Mars' ...

On Feb. 24, from west to east, you can see Mercury, Saturn, Neptune, Venus, Uranus, Jupiter and Mars, all spanning 117.5°, ...

The organic ingredients to life, hints to where Earth’s water came from, and the fundamental building blocks of our planet ...