Our Solar System’s moons and planets have water—in the form of ice, vapor, and even oceans. Scientists are finding more evidence of water outside of Earth.

A meteor shower, a planet sighting, and a full moon. Here's how to see all of space's eye-catching activity in July.

Jupiter is already the biggest planet in our solar system. It used to be known as the planet with the second-most moons with 80, trailing only Saturn with 83.

Moons are natural satellites that rotate around planets or asteroids. They come in many shapes, sizes and types. Larger moons are spherical, but others can have an irregular shape or ...

Find out how many moons the planets have in our solar system. Jupiter may be the biggest planet, but Saturn still has more moons. Find out how many moons the planets have in our solar system. The ...

Samples collected from the near-Earth asteroid Ryugu have revealed clues about a primordial magnetic field that helped asteroids, planets and moons grow in our solar system. Analysis of three ...

Being closer to our enlarged central star will mean drastically hotter temperatures in the planets that remain in the outer solar system, as well as their moons. Alan Stern, a researcher at the ...

The solar system has many more moons than the one we can see in the sky. ... A quasi-moon temporarily orbiting the sun alongside Earth may look as if it is in orbit around our planet. But it is not.

To get a glimpse of the “Swift Planet,” EarthSky suggests waiting for the sun to set before looking west for the planet ...

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 ...

Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to ...

That field likely helped drive matter into the solar system, where it became incorporated into planets, asteroids and moons. The study team analyzed three particles returned from the asteroid Ryugu.