This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. The size of the solar system is defined by the volume ...

Labroots recently explored Saturn’s sponge-like moon, Hyperion, with its deep craters and non-spherical shape. This moon is an example of how the Universe and the laws of astrophysics work in both ...

Click to enjoy a journey across our spacious solar system courtesy of Josh Worth. How do you picture the solar system? Most of us imagine the eight planets as colorful balls of varying sizes moving in ...

Imagine a tiny dusty moon, about one-seventh the size of our planet’s, with polygonal topographical features extending for hundreds of miles, and cliffs taller than any you’d find anywhere on Earth.

Five worlds in the solar system have active volcanoes (those that are currently erupting or have erupted in human history): Earth, Jupiter’s moons Io and Europa, Neptune’s moon Triton, and Saturn’s ...