Heavens Above
NASA Science News
Association Of Lunar
& Planetary Observers
Sunrise/Sunset
for your location
and Planet Roundup from Sky & Telescope
Starry Night Deluxe is used to produce the night sky
backgrounds used on Star Gazer
"The Night Sky" by David
Chandler
Jupiter Moon Identification - U of Md.
Abrams Planetarium Skywatcher's Diary