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Answer:
'The First X-Rays from Comet Hyakutake were discovered on March 27, 1996 using Germany's orbiting ROSAT Satellite'. The comet was near its closest approach to the Earth at a distance of less than 10 million miles when X-ray emissions were first detected by ROSAT. X-rays had not been found from a Comet before, and scientists predicted the amount of intensity to be about 100 times weaker than the radiation actually detected by ROSAT. There were also pronounced increases and decreases in the X-ray brightness from one ROSAT observation to another, typically over a time difference of a few hours.
Category : Comets
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