This gas giant has some really unique features that make it stand out. If you’re curious about space, learning a few things ...

In the summer of 1991, a scuba diver named George Moon was combing the depths of Lake Pleasant in Erie County, Pa. When he ...

#2. The Moon came from Earth. It didn’t form beside our planet, and Earth’s gravity didn’t capture it. The latest theory says ...

But now, it appears that Io’s hell has vanished—or rather, it was never there to begin with. During recent flybys of the volcanic moon by NASA’s Juno spacecraft, scientists measured Io’s ...

Whereas Io is the poster child for this mechanism, tidal heating also heats many other worlds, including Io’s neighbor, the icy moon Europa, where the heat is thought to sustain a subterranean ...

Jupiter moon of Io is famed for its volcanoes. NASA just spotted the most powerful one yet Not only was the hot spot larger than Earth’s Lake Superior, but it also was seen belching out ...

The rocky moon, by contrast, bakes or chills in light and shadow. What's more, a lunar day-night cycle approximates an Earth month, so its surface is exposed to light and darkness for longer periods.

NASA's Juno mission revealed that Jupiter's moon, Io, the most volcanic body in our solar system, doesn't possess a global magma ocean. Instead, separate magma chambers fuel its over 400 active ...

Io, Jupiter's moon, continues to reveal itself. The latest images transmitted by the Juno spacecraft offer an unprecedented view of its tumultuous surface. The Juno mission made a surprising discovery ...

The moon's distance from Earth changes depending on where it is in its elliptical orbit. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Io’s source of heat—a mechanism known as tidal heating—is ultimately responsible for all this planetary sorcery. Scientists wanted to know if that tidal heating always existed within the moon.

Facts about Io Io is the fourth-largest moon in the solar system. It has over 400 active volcanoes on its surface.