Astronomy | Definition, History, Discoveries, & Facts | Britannica
2024年11月17日 · Astronomy, science that encompasses the study of all extraterrestrial objects and phenomena. Since the late 19th century, astronomy has expanded to include astrophysics, the application of physical and chemical knowledge to an …
When to Capitalize School Subjects | Britannica Dictionary
You should capitalize school subjects when they are proper nouns. But which school subjects are proper nouns? When you are talking about a school subject in a general way, you do not need to capitalize it unless it is the name of a language.
Dark matter | Definition, Discovery, Distribution, & Facts | Britannica
2024年12月18日 · Adam Riess is Thomas J. Barber Professor in Space Studies, Department of Astronomy and Physics, Johns Hopkins University and Distinguished Astronomer, Space Telescope Science Institute. He shared the 2011...
Astronomy - Ancient, Celestial, Observations | Britannica
Astronomy - Ancient, Celestial, Observations: Astronomy was the first natural science to reach a high level of sophistication and predictive ability, which it achieved already in the second half of the 1st millennium bce.
Physics | Definition, Types, Topics, Importance, & Facts | Britannica
2024年12月9日 · As the modern sciences developed and became increasingly specialized, physics came to denote that part of physical science not included in astronomy, chemistry, geology, and engineering.
Jocelyn Bell Burnell | Biography, Nobel Prize, Contributions, …
2024年11月26日 · She proceeded to the University of Cambridge, where she was awarded a doctorate (1969) in radio astronomy. As a research assistant at Cambridge, she aided in constructing a large radio telescope and in 1967, while reviewing the printouts of her experiments monitoring quasars, discovered a series of extremely regular radio pulses.
Astronomy - Relativity, Space-Time, Cosmology | Britannica
Astronomy - Relativity, Space-Time, Cosmology: A key theoretical development for 20th-century astronomy and cosmology was the development of the theory of relativity, from 1905 to 1915, which eventually led to an explanation of the origin of the universe.
Physical science | Definition, History, & Topics | Britannica
Physical science is the study of the inorganic world. That is, it does not study living things. (Those are studied in biological, or life, science.) The four main branches of physical science are astronomy, physics, chemistry, and the Earth sciences, which include meteorology and geology.
Science | Definition, Disciplines, & Facts | Britannica
6 天之前 · The physical sciences study the inorganic world and comprise the fields of astronomy, physics, chemistry, and the Earth sciences. The biological sciences such as biology and medicine study the organic world of life and its processes.
astronomy - Students | Britannica Kids | Homework Help
Before the dawn of history someone noticed that certain celestial bodies moved in orderly and predictable paths, and astronomy—an ancient science—was born. Yet some of science’s newest discoveries have been made in this same field, which includes the study of all matter outside Earth’s atmosphere.