Mars has two moons, Phobos and Deimos. Scientists still debate whether these came from asteroids that passed close into Mars' ...

Carrying out simulations to try and discover what best explains the orbits of these objects, the team found that a model that ...

The solar system is approximately 4.6 billion years old. Astronomers believe that roughly 100 million years into its existence, the planets first began to form in a rotating, flat cloud of gas ...

A planet parade is when several of our solar system's planets are visible in the night sky at the same time. There will be six planets visible this time around, including Venus, Mars ...

Astronomers posed over the past decade that dark comets, or objects that resemble asteroids but move like comets, may exist.

It's possible for our solar system to capture a rogue planet and give it a home as it hurtles through the galaxy, according ...

The research team's simulations indicate a 1 in 100 chance that an interstellar visitor could produce the orbits we see today ...

New studies offer a clearer picture of how the outer solar system formed and evolved based on analyses of trans-Neptunian objects (TNOs) and centaurs. The findings reveal the distribution of ices in ...

Dark comets are comets that are so small, fast and/or chemically rare that they are difficult to see from Earth ...

Our solar system's phase space has capture points ... should be common and supports the evidence for a very large number of rogue planets that are free floating in interstellar space that perhaps ...