Jupiter’s volcanically active moon Io casts its shadow on the planet in this dramatic image from NASA’s Juno spacecraft. As with solar eclipses on the Earth, within the dark circle […] ...

Io is plunged into darkness by Jupiter for two hours during every one of its days, which last an equivalent of 1.7 Earth days. Io's volcanoes emit umbrella-like plumes of gas extending up to 300 ...

Jupiter’s third-largest moon Io is the most volcanically active world in our solar system. New radio images by the ALMA telescope array show the direct effect of this volcanic activity on the ...

Three of Jupiter's largest moons will cast their shadows simultaneously on the planet below them creating three solar eclipses at the same time: a rare cosmic event. News Today's news ...

Io is so big & close that it more than blocks the Sun (it appears 4x as big as the Sun from Jupiter’s perspective) and it’s so close that the penumbra (fuzzy outer edge of shadow) is super thin.

Io leaves Jupiter's shadow after 1.7 Earth days, which is 2 hours of Io's day, and the sulfur dioxide sublimates — goes straight from solid to gas — and pumps up the atmosphere once again ...

Two Jupiter moons, Io and Ganymede, will cast double shadows on the planet on Jan. 24. Skip to main content. ... Jupiter's moon shadow play. As Jupiter's moons revolve around the planet, ...

The thin atmosphere on Jupiter’s volcanic moon, Io, “collapses” when the moon enters the gas giant’s shadow, according to a new study. Writing in the Journal of Geophysical Research ...

Jupiter’s volcanically active moon Io casts its shadow on the planet in this dramatic image from NASA’s Juno spacecraft. As with solar eclipses on the Earth, within the dark circle racing ...

The ALMA images revealed that Io’s atmosphere becomes incredibly unstable when it passes through Jupiter’s massive shadow. This occurs every 42 hours during Io’s orbit around Jupiter.

A remarkable series of events involving two of Jupiter's most well-known moons will occur on Monday, Jan. 24, but you'll need a telescope to see them.