Portal:Science
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Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the world. 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 behavioural sciences (e.g., economics, psychology, and sociology), which study individuals and societies. The formal sciences (e.g., logic, mathematics, and theoretical computer science), which study formal systems governed by axioms and rules, are sometimes described as being sciences as well; however, they are often regarded as a separate field because they rely on deductive reasoning instead of the scientific method or empirical evidence as their main methodology. Applied sciences are disciplines that use scientific knowledge for practical purposes, such as engineering and medicine. (Full article...)
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Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, meteoroids, asteroids, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond Earth's atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole. (Full article...)
Did you know...
- ... that the science-fiction video game The Anacrusis is named after a musical term?
- ... that the calling patterns of the Japanese tree frog have been used in wireless network design, furthering an area of science known as swarm intelligence?
- ... that Ana Štěrba-Böhm became the first Slovene woman with a doctorate in science, in 1911?
- ... that Henry E. Sigerist felt "depressed" after reading A History of Science, Technology, and Philosophy in the 16th and 17th Centuries?
- ... that machine learning can be used to recognize rock fractures?
- ... that the Polish science fiction novel Extensa marked the growing recognition of its writer, Jacek Dukaj, in Poland?
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Science News
- 24 September 2024 –
- Scientists from the University of Waterloo announce that they have positively identified bones found on King William Island in Nunavut, Canada, as those of James Fitzjames, captain of HMS Erebus during Franklin's lost expedition. (CBC News)
- 23 September 2024 – Deforestation of the Amazon rainforest
- Climate researchers report that since 1985, deforestation in the Amazon has caused the loss of an area of rainforest equal to the combined area of France and Germany. (France 24)
- 22 September 2024 –
- Researchers from the University of Cape Town and the Max Planck Institute for Evolutionary Anthropology announce they have reconstructed the oldest human genome ever found, belonging to a man and a woman who lived about 10,000 years ago in the Mesolithic period. The prior oldest decoded genome was from about 2,000 years ago. (DW)
- 15 September 2024 – Polaris program
- The spacecraft of the Polaris Dawn private spaceflight mission operated by SpaceX returns to Earth after five days in orbit. (BBC News)
- 12 September 2024 – Polaris program
- American billionaire Jared Isaacman becomes the first person to perform a commercial spacewalk as part of the Polaris Dawn private spaceflight mission operated by SpaceX. (AP)
- 11 September 2024 – Spaceflight
- Following the launch of the Russian Soyuz MS-26 spacecraft from the Baikonur Cosmodrome in Kazakhstan, there were a record 19 people in outer space: the three astronauts on the MS-26 mission, three more on China's Tiangong space station, four people on the SpaceX Polaris Dawn mission, and nine more on board the International Space Station. (CollectSPACE)