"We predict that relatively small planets (< ~ 1.6 Earth radii) are good candidates to host exomoons. Up until now, most exomoon searches have focused on larger planets.

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.

Scientists are now using NASA’s James Webb Space Telescope (JWST) to put the concept to the test. The spacecraft has already sniffed for air around rocky planets orbiting a handful of small, cool ...

Unlike Earth, Kepler-186f is located far from the other planets in its solar system. As a result, these other planets have only a weak effect on their orbit and movement. So, Kepler-186f generally ...

When Earth was young and received its first-ever moon, it might also have received a smattering of mini moons. New research on the Earth-Moon system's orbit over time suggests that so-called ...

However, the question of whether the giant planets have pole stars could actually be quite relevant. ... so Saturn, and its moons, are not nearly so well served.

So which planets in our solar system have rings? All four giant planets — Jupiter, Saturn, ... Jupiter's multiple large moons (namely, the Galilean satellites: Io, Europa, ...

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 ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. Why do some planets have moons and some ...

Why do some planets have moons and some don’t? – Siddharth, age 6, Texas On Earth, you can look up at night and see the Moon shining bright from hundreds of thousands of miles away. But if you ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Left to right: Saturn, Uranus, and Jupiter show off their rings for various NASA spacecraft ...

Indeed, other planets, dwarf planets and moons in our solar system do have seasonal cycles — and they can look wildly different from the ones we experience on Earth, experts told Live Science.