X-ray astronomy

noun

Definition of X-ray astronomy

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

First Known Use of X-ray astronomy

1963, in the meaning defined above

Keep scrolling for more

Learn More about X-ray astronomy

Statistics for X-ray astronomy

Look-up Popularity

Time Traveler for X-ray astronomy

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

See more words from the same year

Comments on X-ray astronomy

What made you want to look up X-ray astronomy? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

formidable, illustrious, or eminent

Get Word of the Day daily email!

Test Your Vocabulary

The Exceptions Quiz III

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!