Size: Io has a mean radius of 1,131.7 miles (1,821.3 km) making it slightly larger than Earth's moon. It has a slightly elliptical shape, with its longest axis directed toward Jupiter.

T he acid yellow moon Io that orbits Jupiter may be less than 30% the size of Earth, but is considered the most volcanic body in our solar system. As demonstrated by explosive news from NASA on ...

Io is Jupiter's third-largest moon, spanning roughly 2,300 miles (3,700 kilometers) ... Based on the size of the mysterious surface feature and the levels of thermal radiation, ...

Three massive volcanic eruptions occurred on Jupiter’s moon Io, a satellite the size of Earth’s moon, within a two-week period last August, leading astronomers to speculate that these presumed rare ...

Jupiter’s moon Io is the most volcanically active body in our solar system, so it’s not a shock that astronomers captured several eruptions while their telescopes were trained on the satellite ...

Io is the closest moon to Jupiter and is one of the most inhospitable places imaginable. Earth's moon, by comparison, is the fifth-largest moon and is nearly the same size as Io.

In size, Io is roughly comparable to the Earth’s moon, also known as “The Moon”. Io is wracked by volcanic activity though, ...

Two waves were spotted sweeping across the enormous lake thanks to rare alignment of Io and Europa. U.S. World; ... Giant Waves on a Lava Lake the Size of Wales Seen on Jupiter's Volcanic Moon Io.

The acid yellow moon Io that orbits Jupiter may be less than 30% the size of Earth, but is considered the most volcanic body in our solar system. As demonstrated by explosive news from NASA on ...

Three massive volcanic eruptions occurred on Jupiter’s moon Io, a satellite the size of Earth’s moon, within a two-week period last August. Astronomers think that these presumed rare outbursts ...