This is a diagram of the Apollo 15 & 16 Gamma-ray Detector from the NASA website. Primarily intended to study the Moon's radioactivity, it made measurements of the cosmic gamma-ray background during its trip. It shows...

This visualization tool aids researchers and educators in understanding the tectonic activity of our planet for the past 1 million years. DTAM is a Geographical Information System (GIS) that displays a realistic synoptic...

The Space Telescope Science Institute (United States) has created this set of all-sky photograph surveys from the ground based telescopes Palomar and UK Schmidt in several colors. Images from any portion of the sky can...

Do you know your Gallinimus from your Barosaurus? If not, it may be high time to take a close look at The Natural History Museum's Dino Directory. Updated regularly, the Dino Directory provides basic information on...

The National Library of Medicine's History of Medicine site has plumbed the various corners of American medicine for years, and this latest offering takes a look at the history of early American psychiatry through...