Voyage of the Moons

If you saw this video with no context, you'd think it was computer rendered and animated. But these are real. NASA-JPL software engineer Kevin Gill works with images from various space missions. In 2000, the space probe Cassini sent back amazingly clear images of Jupiter and Saturn. In the first half of this video, the moons Io and Europa are crossing the red spot of Jupiter. That is followed by Saturn with its moon Titan crossing in front of the planet. In the Saturn sequence, the probe is above the equator and the planet's rings are just a line bisecting the image. But you can see the shadow of the rings on Saturn's lower half. How cool is that? (via Kottke)