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

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

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

A celestial conjunction event featuring Venus and Spica is anticipated for November 3. Jupiter is expected to display a multi-phase transit phenomenon involving Io and its shadow, along with Europa's ...

Jupiter's moon Io stands alone among the solar system's moons. It has more than 400 active volcanoes, and its surface is home ...

On the early hours of November 5, Jupiter's moons Io and Europa will cast their shadows over the planet's cloud surface, visible through a telescope.

JUICE might be bound to Jupiter, but it is fortuitously in place to peek at this object from beyond the stars.

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 ...

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

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

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, ...