X-ray astronomy

noun

: astronomy dealing with investigations of celestial bodies by means of the X-rays they emit

Word History

First Known Use

1963, in the meaning defined above

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The first known use of X-ray astronomy was in 1963

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“X-ray astronomy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/X-ray%20astronomy. Accessed 30 Oct. 2025.

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X-ray astronomy

noun

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