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

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 ...

The Earth's Moon is its only one, but scientists recently discovered a new celestial body that will be staying near the planet for the next several decades.

Saturn's icy moon Enceladus continues to reveal surprises that challenge our understanding of ocean worlds. A new study has ...

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, ...