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Uhuru, launched by NASA in 1970, was the first dedicated X-ray astronomy satellite and successfully conducted the first comprehensive survey of the X-ray sky.
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What was NASA's Uhuru satellite?
Uhuru was the first satellite entirely dedicated to the field of X-ray astronomy. Launched by NASA, it successfully conducted the first comprehensive survey of the X-ray sky from Earth orbit.
When was Uhuru launched and from where?
NASA launched the satellite on December 12, 1970, from the San Marco platform off the coast of Kenya. It was named "Uhuru," which means "freedom" in Swahili, to honor Kenya's recent independence.
What major scientific discoveries did Uhuru make?
Uhuru was the first satellite to detect X-ray emissions from binary star systems containing a black hole candidate, specifically Cygnus X-1. It also discovered X-rays originating from galaxy clusters and the hot gas surrounding the remnants of exploded stars.
How long did the Uhuru mission last?
The satellite operated successfully for over two years until its rechargeable batteries failed in April 1973. Despite its relatively short lifespan, its catalog of X-ray sources laid the crucial foundation for future high-energy astrophysics missions.
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