Jupiter, roughly 562 million miles from Earth today, has nearly 100 moons. But Batygin and his collaborator Fred Adams' research focused on two of the smaller ones, Amalthea and Thebe. Both are inside ...

Whether you're a seasoned stargazer or a backyard observer with binoculars, the final week of May offers a treasure trove of celestial events.

A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow up 2,000 Earths.

According to their work, Jupiter's radius was once two to two-and-a-half times its current radius—large enough to contain ...

Naturally, the aurora on our solar system's largest planet is hundreds of times brighter and more energetic than our own Northern lights.

New Moon brings excellent dark-sky conditions for observing galaxies, nebulae, and star clusters in the sky this week.

Can Mars become a second Earth? Explore the science, challenges, and future of terraforming Mars for human colonization.

At last count, Jupiter has 95 moons, but the four main ones — Ganymede, Callisto, Io and Europa — were discovered in 1610 by famed Italian astronomer Galileo Galilei. But their names came from ...

Stunning new Jupiter photos from NASA’s Juno spacecraft reveal storms, cloud bands, and its volcanic moon Io as the mission ...

The new calculations, described in a paper published Tuesday (May 20) in the journal Nature Astronomy, suggest that just 3.8 ...

The study by Konstantin Batygin of Caltech and Fred Adams of the University of Michigan pulls off a rare feat in planetary ...

Jupiter wasn’t always the planet we know today—it was once twice as big, had a magnetic field 50 times stronger, and its ...