astrophysics
noun
as·tro·phys·ics ˌa-strə-ˈfi-ziks 
plural in form but singular or plural in construction
: a branch of astronomy dealing especially with the behavior, physical properties, and dynamic processes of celestial objects and phenomena
astrophysical
ˌa-strə-ˈfi-zi-kəl
adjective astrophysically
ˌa-strə-ˈfi-zi-k(ə-)lē
adverb astrophysicist
ˌa-strə-ˈfi-zə-sist
noun -ˈfiz-sist
Example Sentences
Recent Examples on the Web In 2019, a study led by undergraduates studying astrophysics suggested that the object came from interstellar space. 
Joshua Hawkins, BGR, 1 Sep. 2022 Carole Mundell, head of astrophysics at the University of Bath in England, told The Post via email. Annabelle Timsit, Washington Post, 21 Aug. 2022 But the fundamental nature of the Gaia mission—an all-sky survey of stars—underpins all of astrophysics. Sasha Warren, Scientific American, 22 June 2022 Carole Mundell, head of astrophysics at the University of Bath in England, told The Post via email. Annabelle Timsit, Anchorage Daily News, 23 Aug. 2022 In addition to his on-field talents, Nugent plans to major in astronomy and astrophysics at Penn State. Scott Springer, The Enquirer, 26 July 2022 Students of physics and the broader sciences will be deeply fascinated by this riveting tour of the cosmos from one of the brightest minds in astrophysics. Daniel Stone, Washington Post, 5 Aug. 2022 School on Wheels changed her outlook: Ms. Sanchez’s math tutor was a grad student in astrophysics at the California Institute of Technology who didn’t see her as a homeless kid, but understood her dreams and aspirations. Magda Hernandez, The Christian Science Monitor, 19 July 2022 Bahcall, a giant in astrophysics, was widely known for his solution to the problem of solar neutrinos and his calculations of the distribution of stars around a massive black hole. Fabio Pacucci, Scientific American, 15 July 2022 See More
Joshua Hawkins, BGR, 1 Sep. 2022 Carole Mundell, head of astrophysics at the University of Bath in England, told The Post via email. Annabelle Timsit, Washington Post, 21 Aug. 2022 But the fundamental nature of the Gaia mission—an all-sky survey of stars—underpins all of astrophysics. Sasha Warren, Scientific American, 22 June 2022 Carole Mundell, head of astrophysics at the University of Bath in England, told The Post via email. Annabelle Timsit, Anchorage Daily News, 23 Aug. 2022 In addition to his on-field talents, Nugent plans to major in astronomy and astrophysics at Penn State. Scott Springer, The Enquirer, 26 July 2022 Students of physics and the broader sciences will be deeply fascinated by this riveting tour of the cosmos from one of the brightest minds in astrophysics. Daniel Stone, Washington Post, 5 Aug. 2022 School on Wheels changed her outlook: Ms. Sanchez’s math tutor was a grad student in astrophysics at the California Institute of Technology who didn’t see her as a homeless kid, but understood her dreams and aspirations. Magda Hernandez, The Christian Science Monitor, 19 July 2022 Bahcall, a giant in astrophysics, was widely known for his solution to the problem of solar neutrinos and his calculations of the distribution of stars around a massive black hole. Fabio Pacucci, Scientific American, 15 July 2022 See More Word History
Etymology
International Scientific Vocabulary
First Known Use
1870, in the meaning defined above