The morning of April 24 will give rise to a striking mini-planetary parade, as Mercury, Venus, Saturn, Neptune, and Earth's ...

Almost 10 years ago, a NASA spacecraft was able to take several photos of Pluto, known for decades as a planet before it was ...

Our solar system contains a central star with eight planets, dwarf planets, moons, comets and asteroids.

Extrasolar planets contextualise the Solar System among a large number of planetary systems with very different properties. Many extrasolar planets show characteristics which are not realised in the ...

To date, NASA tallies 293 moons in orbit around planets in our Solar System, most of which are attendant on Jupiter and Saturn. There are also moons orbiting dwarf planets and even asteroids.

The IAU also estimates that there could be "more than 100" extra dwarf planets waiting to be found in the outer solar system, all of which could have moons. "Just like the giant planet satellites ...

Space exploration focuses on the formation and evolution of the Solar System and fundamental questions about the origin and existence of life in the universe. Planets, dwarf planets, moons, asteroids ...

For the first time, astronomers think they've found solid evidence of a moon orbiting a planet outside of our solar system. And it's a doozy. The exoplanet, named Kepler-1625b, is 8,000 light ...

As well as planets and moons, the solar system also contains dwarf planets, which are too small to be considered planets. The best known of these is Pluto, an ice dwarf that orbits far from the ...