Jupiter's Galilean moons often transit the planet's disk one at a time - tonight, however, Io and Europa cross the disk ...

Looking for a sky event this week? Check out our full Sky This Week column. October 12: The Saturn Nebula shines Last Quarter ...

The moon, just hours past its last quarter phase, will rise above the east-northeastern horizon shortly before midnight local ...

In new images captured by NASA's Juno spacecraft, fiery volcanic activity is seen erupting across Jupiter's moon, Io. Io is the third-largest of Jupiter's four Galilean moons and is the most ...

Infrared mapping tech aboard the spacecraft sheds light on the volcanic activity of Io, Jupiter's second-smallest Galilean moon reading time 2 minutes It’s not a big moon relative to a few of its ...

A study utilizing ALMA observations of Io's atmosphere reveals a significant depletion of lighter sulfur isotopes, suggesting extensive and prolonged volcanic activity throughout its 4.57 billion-year ...

The hellish surface of a moon of Jupiter known as Io is riddled with hundreds of lava-spewing volcanoes that make the world one of chaos and violence. The brutal conditions also make Io intriguing to ...

Can ground-based telescopes obtain the same image resolution of planetary objects as space-based telescopes, or even spacecraft directly orbiting other worlds? This is what a recently submitted study ...

NASA has revealed animations of the surface of Jupiter's moon Io, made using brand-new data gathered from the far-off moon. Io, which is Jupiter's third-largest moon, features large mountains and a ...

One of those objects is M63, also known as the Sunflower Galaxy. It lies relatively close to the constellation’s alpha star, magnitude 2.9 Cor Caroli. From this sun, move your telescope 5.3° to the ...