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 website allows the user to to create and view simulations that show the evolution of stars on a Hertzsprung-Russell (HR) diagram. The site provides tutorials on: how to use the website, H-R Diagrams, and stellar...

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...

This is the website for Discover magazine. Users may access all the latest scientific news and research. The site is regularly updated and includes many different classroom and lab activities for educators. Back issues...

DLAC1, a distance learning course on forecasting fog and low stratus for aviation operations, is designed to give forecasters a comprehensive understanding of the physical mechanisms, synoptic patterns, and mesoscale...