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Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. Modern science is typically divided into two or three major branches: the natural sciences (e.g., physics, chemistry, and biology), which study the physical world; and the social sciences (e.g., economics, psychology, and sociology), which study individuals and societies. Applied sciences are disciplines that use scientific knowledge for practical purposes, such as engineering and medicine. While sometimes referred to as the formal sciences, the study of logic, mathematics, and theoretical computer science (which study formal systems governed by axioms and rules) are typically regarded as separate because they rely on deductive reasoning instead of the scientific method or empirical evidence as their main methodology. (Full article...)
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The universe is all of space and time and their contents. It comprises all of existence, any fundamental interaction, physical process and physical constant, and therefore all forms of matter and energy, and the structures they form, from sub-atomic particles to entire galactic filaments. Since the early 20th century, the field of cosmology establishes that space and time emerged together at the Big Bang 13.787±0.020 billion years ago and that the universe has been expanding since then. The portion of the universe that can be seen by humans is approximately 93 billion light-years in diameter at present, but the total size of the universe is not known. (Full article...)
Did you know...
- ... that the 14th-century house Maison de Jeanne was positively dated with the science of dendrochronology?
- ... that public health measures and advances in medical science in modern human history helped raise global life expectancy from about 31 years in 1900 to over 66 years in 2000?
- ... that the Data Colada bloggers drew attention to the replication crisis by exposing faulty social science research?
- ... that Charles Leslie Richardson was ordered to "make science fashionable in the army"?
- ... that the Polish science fiction novel Extensa marked the growing recognition of its writer, Jacek Dukaj, in Poland?
- ... that Ukrainian science fiction and fantasy is written both in Ukrainian and Russian?
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Science News
- 7 March 2025 – Stand Up for Science 2025
- Organized demonstrations and walkouts of scientists take place across 30 cities in the United States and France in protest of the Donald Trump administration's grant budget and employment cuts to several government scientific agencies. (AP)
- 6 March 2025 –
- According to a report in the academic journal Science, the population of the 554 recorded species of butterflies in the U.S. have declined by 22% since 2000. (NPR)
- 6 March 2025 – 2025 in spaceflight
- Starship flight test 8
- SpaceX launches its eighth test flight of the Starship launch vehicle from Starbase in Texas, United States. The first stage was caught by the launch tower despite Raptor engine failures during landing, but the second stage failed during its burn, mirroring the last flight test in January. (Reuters)
- Intuitive Machines' space probe IM-2 Athena lands on Mons Mouton near the lunar south pole after launching from Kennedy Space Center in Florida, U.S., on February 27. (BBC News)
- An Ariane 6 rocket launches French military satellite CSO-3 from Guiana Space Centre in French Guiana. It is the first commercial launch of the Ariane 6 expendable launch system. (AP)
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