NASA's Galileo spacecraft discovers Jupiter moon Amalthea is a low-density icy rubble pile

On November 5, 2002, NASA's Galileo spacecraft conducted a flyby of Jupiter's moon Amalthea and discovered that the moon is composed of a pile of icy rubble with a density less than that of water. This finding provided new insights into the composition and structure of small moons in the Jovian system.

Originally published by gnews