Why does Jupiter look like it has a surface – even though it doesn’t have one? – Sejal, age 7, Bangalore, India The planet Jupiter has no solid ground – no surface, like the grass or dirt ...

Callisto, the third largest moon in the entire solar system, orbits Jupiter from about 1.2 million miles away. The rocky ...

The fifth planet from the sun, Jupiter is what watercolor ... some of the first detailed looks at the planet's poles, which revealed cyclone swarms gyrating on its surface with roots that likely ...

NASA has captured the highest-resolution photo of Europa, one of Jupiter ... surface of the moon. Because this photo of Europa is so high resolution, too, we are actually able to get a good look ...

The friction builds up heat inside Io and causes, think scientists, an ocean of magma under its rocky surface ... Jupiter, though nine of them orbit in the opposite direction to the inner moons ...

Jupiter’s famous clouds aren’t ammonia ice but a murky mix of chemicals, sitting lower in the atmosphere than expected. For years, astronomers believed that Jupiter’s upper clouds — responsible for it ...

Io is Jupiter's third-largest moon, spanning roughly 2,300 miles (3,700 kilometers) across, which makes it slightly bigger than Earth's moon. It orbits Jupiter at a distance of around 262,000 ...

The volcanic moon, which orbits the gas giant Jupiter, has long been written ... giving us a good look at the planet’s bright surface. Most of the information we have about Io is old, dating ...

New findings from NASA's Juno probe provide a fuller picture of how widespread the lava lakes are on ... the whole surface of Io is covered by lava lakes contained in caldera-like features ...