APOD from 2026-01-20
Io in True Color
Galileo spacecraft's 1999 image shows Io, the Solar System's strangest #moon, in true colors. Its bright yellow hue comes from sulfur and molten rock. Intense tidal forces from #Jupiter heat Io's interior, fueling active volcanoes that are reshaping its surface. Some lava is hot enough to glow in darkness.
HD image at https://apod.nasa.gov/apod/ap260120.html#space #astronomy
