The vernal equinox occurs as Mercury stands still in Pisces and several of Jupiter’s moons transit in the sky this week.

The number of known moons in our Solar System has been rising for centuries, but astronomers say it has probably peaked – for ...

Saturn surpasses Jupiter with 128 newly discovered moons, becoming the planet with the most moons in our solar system.

Earlier this week, Saturn gained a whopping 128 new official moons, as the International Astronomical Union recognised ...

Sep. 3, 2024 — Around 4 billion years ago, an asteroid hit the Jupiter moon Ganymede. Now, a researcher realized that the Solar System's biggest moon's axis has shifted as a result of the impact ...

The first time you may have heard the term ‘dwarf planet’ was when Pluto got demoted to one in 2006 (RIP). However, we actually have six in our Solar System. Pluto, Ceres, Makemake, Haumea, and Eris ...

The smashups are thought to have occurred at least 100 million years ago, but the moons they created are new to astronomers.

March's full "Blood Worm Moon," a phenomenon that makes the moon appear red during a total lunar eclipse, is visible this week for Americans and others in Earth's Western Hemisphere. The full moon ...

Here are the dates for the full moons in 2025. The next full moon will be on Saturday, April 12. It will officially reach its full moon phase at 8:22 p.m. EDT (0022 GMT April 13), but local ...