See related story: Stunning Space Pix on the Net

This X-ray image is a spectrum of a black hole, which is similar to the colorful spectrum of sunlight produced by a prism. The X-rays of interest are shown here recorded in the bright stripe that runs rightward and leftward from the center of the image. These X-rays are sorted precisely according to their energy with the highest-energy X-rays near the center of the image and the lower-energy X-rays farther out.
NASA/CXC/SAO
A collage of images gathered in the first 2 years of the Chandra X-ray telescope.
NASA/CXC/SAO
This image shows central region of the spiral galaxy NGC 4631 as seen edge-on from NASA�s Chandra X-ray Observatory and Hubble Space Telescope. The Chandra data (shown in blue and purple) provide the first unambiguous evidence for a halo of hot gas surrounding a galaxy that is very similar to our Milky Way. The structure across the middle of the image and the extended faint filaments (shown in orange) represent the observation from Hubble that reveals giant bursting bubbles created by clusters of massive stars.
NASA/CXC/SAO
The X-ray data from the Chandra X-ray Observatory have revealed a bright central star surrounded by a cloud of multimillion-degree gas in the planetary nebula known as the Cat's Eye. This composite image of Chandra and Hubble Space Telescope data offers astronomers an opportunity to compare where the hotter, X-ray emitting gas appears in relation to the cooler material seen in optical wavelengths.
NASA/UIUC/HST
E0102-72 is the remnant of a supernova located in the Small Magellanic Cloud, a satellite galaxy of the Milky Way. This galaxy, located in the constellation Tucuna, is believed to have resulted from the explosion of a massive star several thousand years ago. Stretching across 40 light years of space, Chandra's image of the multi-million degree source resembles a flaming cosmic wheel.
NASA/CXC/SAO