Jupiter, the largest planet in our solar system, is home to a fascinating array of moons. Among its 90-plus satellites, one ...

On November 21, 1676, the Danish astronomer Ole Rømer discovered the speed of light. Before Rømer figured it out, scientists ...

If you are not bullish on last week’s passion-drenched story of Europa, Jupiter, and Taurus, please consider Jupiter and Io’s ...

NASA's Juno spacecraft has sent back new, eye-catching images of Jupiter, capturing intricate views of the planet's turbulent ...

Io is well-known as the most geologically active world in the solar system, and it's not even close. It has more than 400 active volcanoes. Io is the closest moon to Jupiter, and the planet's ...

Jupiter moon Io, imaged by SHARK-VIS on Jan. 10, 2024. This is the highest resolution image of Io ... [+] ever obtained by an Earth-based telescope. The image combines three spectral bands ...

Jamie Carter is an award-winning reporter who covers the night sky. An image of Jupiter and Io as seen by NASA's Juno on August 18, 2024 during its 64rd perijove. ... [+] Processed by citizen ...

Or perhaps more likely, look at under a microscope. The latest candidate for hosting nearby life is Jupiter’s moon, Io. Let’s take a look at what makes Io special, and what we might hope to ...

At the time of last week's picture, Red Spot floaters could see Ganymede. In this picture, Jupiter's closest moon, Io, is visible. The white and reddish colors on Io's surface are due to the ...

A bit larger than our Moon, Io is the innermost of Jupiter’s four large moons. As it circles Jupiter, Io is gravitationally perturbed by its three sister moons, first being pushed slightly closer to ...

These pinpricks of light are actually Jupiter's four largest moons, now known as the Galilean moons: Io, Europa, Ganymede, and Callisto. Many of these celestial orbs are as remarkable as Jupiter ...