Looking for a sky event this week? Check out our full Sky This Week column. December 19: Visit Triangulum Jupiter's innermost ...

Astronomers have discovered new auroras over Jupiter's four largest moons: Io, Europa, Ganymede, and Callisto, observable at visible wavelengths. The new auroras reveal in greater detail the ...

Astronomers continue to make new discoveries about the Galilean moons of Jupiter, a thrilling environment of ice and fire. In a pair of studies published this month, the James Webb Space Telescope ...

Most of us know four moons of Jupiter, called the Galilean moons because they were first discovered by Galileo in 1610. Named for figures closely associated with Jupiter from Greek mythology, Io, ...

Sky This Week is brought to you in part by Celestron. Friday, December 19We're getting ready to say goodbye to the summertime ...

Skywatchers who are out during the late evening hours on Sunday will almost certainly be attracted toward the eastern sky, where the two brightest visible objects at that hour will be readily evident.

Earth’s isn’t the only atmosphere capable of producing ethereal displays of diaphanous light in the sky like the Northern lights. Case in point, astronomers have observed the entrancing glows of ...

Researchers reported auroras around Jupiter’s two largest Galilean moons for the first time and found new features in the auroras of volcanic Io and icy Europa. By Robin George Andrews A sightseeing ...

Bri Kane: Poets are always talking about the moon. But this time it’s Ada Limón, our United States Poet Laureate, and she’s not talking about our moon. She was asked by NASA to write a poem about ...

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.

Jupiter shines brilliantly in the eastern sky this December as it nears opposition early in 2026, outshining nearby stars and ...