ESA's Mars Express orbiter captured footage of the Mars' moon Deimos pass in front of Ganymede, Europa, Jupiter, Io and Callisto (in that order). Credit: Space.com | footage credit: ESA/DLR/FU Berlin ...

In a landmark observation by a team of international researchers, NASA's Juno spacecraft has, for the first time, clearly ...

The crescent moon will shine with Jupiter among the stars of Gemini early on Sept. 16. Turn your eyes to the east in the ...

Io, Europa and Ganymede had already shown their footprints through earlier observations. But Callisto, the farthest Galilean ...

Amazing views of Jupiter over the years via the Hubble Space Telescope. The moons of Io, Ganymede and hazy Uranus can be ...

NASA's Juno spacecraft has detected the auroras of Jupiter's moon Callisto for the first time, completing observations of all four Galilean moons.

However, prior to NASA's Juno mission, scientists had been unable to capture the auroral imprint of Callisto. The auroral phenomena of Jupiter are among the most striking natural wonders in the solar ...

Who hasn't looked into the sky and wondered if there's life out there, somewhere, looking back at us? Is it possible there's ...

The autumn night sky in Ireland is an observer's treasure-trove and the first celestial event of the season arrives on September 7 with a lunar eclipse and blood moon ...

In the early hours of September 16 skywatchers across North America and parts of Europe will have a rare opportunity to ...

A buildup of atmospheric pressure overhead will lead to drier and hotter weather, with daily temperatures peaking close to ...