The predawn hours of Aug. 8 present a perfect opportunity to see Jupiter's four largest moons line up next to the "King of the Planets" as it voyages through the stars of the constellation Gemini.

The moon, just hours past its last quarter phase, will rise above the east-northeastern horizon shortly before midnight local ...

"Complete color global maps and high-resolution mosaics of Jupiter's four large moons - Io, Europa, Ganymede and Callisto - are compiled for the first time in this important atlas. The satellites are ...

The NASA/ESA/CSA James Webb Space Telescope has provided the first direct measurements of the chemical and physical properties of a potential moon-forming disk encircling a large exoplanet. The carbon ...

On April 11th, Jupiter's Great Red Spot will be centrally visible around 8:45 PM EDT, and Io will transit Jupiter, beginning around 8:30 PM EDT, with its shadow following shortly after. Other Galilean ...

Among the planets in our solar system, Jupiter is the eldest and largest, and it often appears as the second brightest in the night sky after Venus. Scientists have long tracked this streaked gas ...