Not every planet has a moon – so why do some planets have several moons, while others have none? I'm a physics instructor who ...

A pair of astrophysicists with Aix- Marseille Université, CNRS, and Institut Universitaire de France have developed a new ...

For circumbinary exomoons, our research shows that it would be best to search in systems that have a wide binary separation, as stable moons were able to orbit at up to 10% of their planet's hill ...

The Solar System is our immediate neighborhood and its planets and moons have shared the same astrophysical environment, e.g., experienced the same evolution of our central star, the Sun. Nevertheless ...

It has a surface temperature of over 470°C. Only two of the terrestrial planets have moons orbiting them: Jupiter is the largest planet in the solar system and has 79 moons. The four largest ...

A new study implies that in the past, moons in our solar system may have had rings just like planets do — deepening the mystery of why no ringed moons exist today.

Other exciting things to keep an eye out for in the night sky this month are bright planets. The planets will continue to put ...

However, even some dwarf planets and asteroids have rings, but none of the roughly 300 moons in the solar system have been found to have rings. A detailed simulation to solve this mystery has ...