NASA's Hubble Space Telescope has picked up the faint, ghostly glow of stars ejected from ancient galaxies that were gravitationally ripped apart several billion years ago.
This Chandra X-ray Observatory image of the Hydra A galaxy cluster was taken on Oct. 30, 1999, with the Advanced CCD Imaging Spectrometer (ACIS) in an observation that lasted about six hours.
NASA and Lockheed Martin have completed final assembly and testing of the Orion spacecraft. The spacecraft will remain inside NASA's Launch Abort System Facility at Kennedy Space Center until it rolls to launch pad 37 in November.
As it soared past Saturn's large moon Titan recently, NASA's Cassini spacecraft caught a glimpse of bright sunlight reflecting off hydrocarbon seas.
Astronomers have long sought to understand exactly how the universe evolved from its earliest history to the cosmos we see around us in the present day.
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