A new analysis estimates that the asteroid belt is steadily losing mass each year, and may not be as permanent a feature of the solar system as we thought. When you purchase through links on our site, ...

Jupiter’s moon Io is the most volcanically active place in the solar system. Let me tell you just how volcanic it is.

Illustration comparing the planets of the Solar System and the Sun on the same scale. The planets are shown to scale relative to each other but their distances are not. From left to right the bodies ...

Planetary scientists have long debated where the material that formed Earth comes from. Despite its location in the inner ...