Astronomy Fun Fact:You can see Jupiter's 4 large moons in a good pair of binoculars. Most of the time, though, only 2 or 3 are visible. Want to know which moon is which? Have a look in Astronomy Magazine (they have a chart) or download software for the purpose. One such program is (the link is the download!)
Galilean Satellites v5.3.
(L to R) Ganymede, Callisto, Io, Europa
What a great picture, It reminds me that halloween is not far off! Good job APOD!
