Quick Facts
Adding us as a Preferred Source tells Google you trust our content, so our articles show up more often in your Google Search, Discover feed, and AI Overviews.
verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies.
Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style
science
Top Questions
When did science begin?
When did science begin?
How is science related to math?
How is science related to math?
Where was science invented?
Where was science invented?
News •
Celebrate as Voyager 1 reaches 1 light-day from Earth! Here’s how
• Nov. 10, 2026, 3:00 AM ET (EarthSky)
Quantum gas microscope reveals individual atoms in first tunable three-component Hubbard system
• Nov. 6, 2026, 3:20 PM ET (Phys.org)
Scientists achieve record-breaking low temperature on China's space station, paving the way for new physics experiments
• Nov. 6, 2026, 12:00 PM ET (Phys.org)
Ice-age abrupt climate shifts were not as fast as thought, new study finds
• Nov. 5, 2026, 2:00 PM ET (Phys.org)
‘Everybody loves it’: Science tricks offer a treat at Valparaiso University
• Nov. 1, 2026, 5:05 PM ET (Chicago Tribune)
Understanding scientific hypotheses, theories, and modelsAn explanation of the difference between a scientific hypothesis and a scientific theory.
See all videos for this articlescience, any system of knowledge that is concerned with the physical world and its phenomena and that entails unbiased observations and systematic experimentation. In general, a science involves a pursuit of knowledge covering general truths or the operations of fundamental laws.
Science can be divided into different branches based on the subject of study:
- The physical sciences study the inorganic world and include the fields of astronomy, physics, chemistry, and the Earth sciences.
- The social sciences study the social and cultural aspects of human behavior. They include anthropology and economics, among many other disciplines.
Science is further treated in a number of articles. For the history of Western and Eastern science, see history of science. For the conceptualization of science and its interrelationships with culture, see philosophy of science. For the basic aspects of the scientific approach, see principles of physical science and scientific method.
Britannica Quiz
36 Questions from Britannica’s Most Popular Science Quizzes
The Editors of Encyclopaedia BritannicaThis article was most recently revised and updated by J.E. Luebering.


" height="20" alt="HEW Logo">