This collection of images features spacecraft and instruments used for high-energy research, typically studies of X-rays and Gamma rays. The collection includes pictures of early astronomy rockets and instruments, an...

The telescopes were developed at the Harvard-Smithsonian Center for Astrophysics and were designed to enable students and teachers nationwide to investigate the wonders of the deep sky from their classrooms. The project...

This site from NASA\'s Infrared Astrophysics Data Center explains how the universe can be observed using the entire electromagnetic spectrum. There is an introduction to using light in astronomy; information on and...

This article is a Why Files short piece on how astronomers use information from radio astronomy. Contrary to popular belief, large radio telescopes are not looking for signs of life outside our solar system, but are...

Robert Gendler is an amateur astronomer with an extensive online gallery of his astronomy images. His pictures are available in high resolution on the web and for purchase in print form through his website. The author...