Looking for a sky event this week? Check out our full Sky This Week column. November 16: Iapetus at western elongation The ...

ESA's Mars Express orbiter captured footage of the Mars' moon Deimos pass in front of Ganymede, Europa, Jupiter, Io and ...

Io, moon of Jespiter Jupiter, is famously volcanically active. It has more than 400 active volcanoes, over an area the size of Asia. Some of the volcanic mountains are taller than Mount Everest.

Times listed are from The Sky This Week by Astronomy magazine, calculated for 40°N, 90°W. Central Wisconsin observers can expect sunrise, ...

This month, weather permitting, we can look forward to perhaps the very best of the annual meteor showers. The Geminids are due to peak around the middle of the month, so fingers crossed for clear ...

At a young age, we're told how the sun warms Earth and makes life possible. That idea sticks with most of us for life. But ...

Through a vast ocean, Jupiter's moon Europa is an exciting target for research in the search for life. Two space probes are ...

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

This weekend, skywatchers can witness the moon and Jupiter's close proximity in the east-northeast sky, offering a brilliant celestial spectacle.

If you do check out Jupiter with a small telescope on Sunday night, you'll see all four Galilean moons, with Ganymede and Io on one side of Jupiter and Europa and Callisto on the other. The ...

Wausau Pilot & Review Mercury meets Mars as the Moon wanesCentral Wisconsin skywatchers will find this week packed with ...

Using data from NASA's Juno spacecraft, scientists have discovered that the solar system's most volcanic body is even hotter ...