Facts about Io (Jupiter's moon)
- 08
Io's surface deposits of sulfur and sulfur compounds create colorful red, yellow, and orange regions that continuously change appearance as fresh volcanic material erupts and reshapes the landscape.
- 07
Io orbits Jupiter every 1.77 days in a tight gravitational dance with the moons Europa and Ganymede, creating a resonance pattern that perpetually stretches and flexes the moon's interior.
- 06
Io's thin exosphere contains potassium atoms that form an extensive neutral cloud stretching millions of kilometers across Jupiter's magnetosphere.
- 05
Io's sodium emissions create a faint yellow aurora visible from Earth through telescopes, originating from atoms sputtered from the moon's surface by energetic particles.
- 04
Io's surface contains mountains reaching 9 kilometers in height despite the moon's small size and intense volcanism continuously reshaping its terrain.
- 03
Tidal heating from Jupiter's gravitational pull generates internal temperatures exceeding 1,600 Kelvin on Io, driving intense volcanic activity across the moon's surface.
- 02
Io's sulfur dioxide atmosphere freezes and falls as snow during its eclipse into Jupiter's shadow, then sublimates back into gas when sunlight returns.
- 01
Over 400 active volcanoes cover Io, Jupiter's moon, making it the most volcanically active body in our solar system.