Physics/Astronomy Librarian
NASA and other U.S. Government Astronomy Sites
- NASA Home Page
An enormous site with links to data generated by NASA sponsored missions, to images, and to other NASA sponsored research sites. - U.S. Naval Observatory Astronomy Data Services
Links to data about sunrise, sunset, phase of the moon, eclipses, daily positions of the sun and moon, and more. - Planetary Image Atlas
Data and images from NASA sponsored missions.