NASA’s decommissioned Rossi X-ray Timing Explorer (RXTE) satellite re-entered Earth’s atmosphere on April 30. Orbiting for more than 22 years, the 6,700-pound satellite operated from 1996 to 2012, ...
An illustration of the Imaging X-ray Polarimetry Explorer (IXPE) spacecraft. Credit: NASA GRAPEVINE, Texas — NASA has selected an X-ray astronomy spacecraft to study black holes and other astronomical ...
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