Since its launch on July 23, 1999, the Chandra X-Ray Observatory has been NASA's flagship mission for exciting and new X-ray astronomy projects. The project is overseen by the Harvard-Smithsonian Center for Astrophysics, and visitors can start by clicking on the "About" area to learn about Chandra's mission, and also learn about the man behind the Observatory's name, Nobel-Prize winning physicist...

NASA's Chandra X-Ray Observatory, designed to observe X-rays from high energy regions of the universe, regularly releases images taken using the Advanced CCD Imaging Spectrometer (ACIS). This image shows a pulsar located exactly at the geometric center of the supernova remnant known as G11.2-0.3. The image is accompanied by a table giving the scale, category, coordinates, observation date and...

NASA's Chandra X-Ray Observatory, designed to observe X-rays from high energy regions of the universe, regularly releases images taken using the Advanced CCD Imaging Spectrometer (ACIS). This image reveals a bright central star surrounded by a cloud of multimillion-degree gas in the Cat's Eye nebula. The image is accompanied by a table giving the scale, category, coordinates, observation date and...

NASA's Chandra X-Ray Observatory, designed to observe X-rays from high energy regions of the universe, regularly releases images taken using the Advanced CCD Imaging Spectrometer (ACIS). This image is animated to show the twinkling of the Orion Nebula, one of the closest star-forming regions to Earth (AVI). The image is accompanied by a table giving the scale, category, coordinates, observation...

The Center for Space Research at the Massachusetts Institute of Technology provides this site with data and other information from the Rossini X-Ray Timing Explorer (XTE) Mission's High Energy X-ray Timing Experiment (HEXTE). Visitors to the site can access recent, raw light curve data (HTML) using the ASM (All-Sky Monitor) Data Extraction Form into which source name, coordinates, start and stop...

"XMM-Newton is a joint NASA-European Space Agency (ESA) orbiting observatory, designed to take observe high energy X-rays emitted from exotic astronomical objects such as pulsars, black holes and active galaxies." Educators can find numerous classroom materials including a ruler illustrating many of the X-ray images obtained by XMM-Newton, an activity and background material for the Supernova...