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Solar
System (20 listings) Comets and planets |
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Normal
Stars & Star Clusters (134 listings) Stellar coronas, clusters of stars and hot gas produced by outflow from young stars. |
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White
Dwarfs & Planetary Nebulas (48 listings) Hot gas associated with the final stages of evolution of Sun-like stars, novas, and other white dwarfs in binary star systems. |
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Supernovas
& Supernova Remnants (198 listings) X-ray sources produced by the violent explosions of massive stars. |
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Neutron
Stars/X-ray Binaries (108 listings) Hot, isolated neutron stars, rotation-powered pulsars, and neutron stars accreting matter from a nearby companion star. |
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Black Holes (184 listings) Stellar black holes, mid-mass black holes, and supermassive black holes. |
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Milky
Way Galaxy (41 listings) Images related to the Galactic Center and other features of the structure and evolution of the Milky Way Galaxy. |
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Normal
Galaxies & Starburst Galaxies (174 listings) Images of spiral, elliptical, and irregular galaxies that show X-ray sources associated with collapsed stars and star formation. |
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Quasars
& Active Galaxies (137 listings) Galaxies with unusually energetic activity, including high-energy jets, that is related to a central supermassive black hole. |
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Groups
& Clusters of Galaxies (176 listings) Vast clouds of hot gas embedded with numerous galaxies. |
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Cosmology/Deep
Fields/X-ray Background (51 listings) The sky as observed in X-rays is not dark, but gives off a glow thought to be from many distant sources. Deep surveys with the Chandra X-ray Observatory should reveal the cause of this glow. |
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Miscellaneous
(40 listings) Objects that don't fit in the above categories, such as brown dwarfs & gamma-ray bursts. |
Text version of complete category list
Revised: June 26, 2023