On this day in space! Nov. 5, 2002: NASA's Galileo spacecraft flies by Jupiter moon Almathea only to find it's a 'pile of icy rubble less dense than water'

Space.com

On Nov. 5, 2002, NASA's old Galileo spacecraft flew by a small moon called Amalthea and made a surprising find. Here's why it mattered.

Summary from Space.com