as·​tro·​phys·​ics | \ ˌa-strə-ˈfi-ziks How to pronounce astrophysics (audio) \

Definition of astrophysics

: a branch of astronomy dealing especially with the behavior, physical properties, and dynamic processes of celestial objects and phenomena

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Other Words from astrophysics

astrophysical \ ˌa-​strə-​ˈfi-​zi-​kəl How to pronounce astrophysical (audio) \ adjective
astrophysically \ ˌa-​strə-​ˈfi-​zi-​k(ə-​)lē How to pronounce astrophysically (audio) \ adverb
astrophysicist \ ˌa-​strə-​ˈfi-​zə-​sist How to pronounce astrophysicist (audio) , -​ˈfiz-​sist \ noun

Examples of astrophysics in a Sentence

Recent Examples on the Web In any case, this is a watershed moment in astrophysics. Jennifer Leman, Popular Mechanics, "Two Black Holes Smashed and Completely Changed What We Know About the Universe," 8 Sep. 2020 In a normal game of Civilization, the opening screen was a swirling animation of astrophysics and volcanic activity. Sid Meier, Ars Technica, "From Pong to Civilization: How I made “one more turn” work on consoles," 8 Sep. 2020 Cute little carts like the Audi Lunar Quattro, scheduled for a late-2019 launch, and NASA's Opportunity Mars rover, which lasted 15 years on the red planet, are technical marvels of astrophysics. Clifford Atiyeh, Car and Driver, "Toyota's Hydrogen Lunar Cruiser SUV Will Let Astronauts Drive on the Moon in 2030," 2 Sep. 2020 These satellite constellations weren't an issue 10 years ago when the National Research Council of the National Academy of Sciences released its Astro2010 decadal survey of astronomy and astrophysics. Ashley Strickland, CNN, "Bright satellites in the thousands could impact future space discoveries," 28 Aug. 2020 But while teaching an astrophysics class this spring, theoretical physicist Matt Caplan of Illinois State University realized the fate of one last group of entities had never been accounted for. Adam Mann, Science | AAAS, "This is the way the universe ends: not with a whimper, but a bang," 11 Aug. 2020 Having authored several astrophysics nonfiction books over the years, Arcand recently turned her attention to children’s books. Courtney Sexton, Smithsonian Magazine, "Inspire Your Toddler’s STEM Career With This ‘Goodnight Moon’ Parody," 11 Aug. 2020 Helen Qu is an astrophysics grad student who loves cooking, baking, and trying new recipes in her free time. Helen Qu, Bon Appétit, "All You Salty-Sweet Fans, Chinese Sausage is For You," 30 July 2020 In 1974, May postponed his doctoral studies in astrophysics at Imperial College London to tour with Queen full time, returning in 2006 to complete his Ph.D. Jennifer Leman, Popular Mechanics, "Queen's Brian May Is Investigating All the Asteroids," 3 June 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'astrophysics.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of astrophysics

1870, in the meaning defined above

History and Etymology for astrophysics

International Scientific Vocabulary

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Time Traveler for astrophysics

Time Traveler

The first known use of astrophysics was in 1870

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Statistics for astrophysics

Last Updated

14 Sep 2020

Cite this Entry

“Astrophysics.” Dictionary, Merriam-Webster, Accessed 1 Oct. 2020.

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More Definitions for astrophysics


How to pronounce astrophysics (audio)

English Language Learners Definition of astrophysics

: the scientific study of the physical and chemical properties and structures of stars, planets, and other objects in outer space

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