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 ...

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

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

Don’t miss the moon’s close pass by Jupiter and Pollux this Sunday evening while the iconic constellation Orion rises in the ...

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

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In the eastern morning sky, Venus is being swallowed by the rising sun’s glare. Taking Venus’s place this month is Arcturus, the brilliant star in kite-shaped Bootes, the herdsman. Meanwhile, Jupiter ...