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The age of the Solar System, including Earth, was determined, and it turned out to be much older than believed earlier: more than 4 billion years, rather than the 20 million years suggested by Lord Kelvin in 1862. [2] The planets of the Solar System and their moons were closely observed via numerous space probes.
The Scientific Revolution occurs in Europe around this period, greatly accelerating the progress of science and contributing to the rationalization of the natural sciences. 16th century: Gerolamo Cardano solves the general cubic equation (by reducing them to the case with zero quadratic term).
1930s in science (20 C, 18 P) 1940s in science (21 C, 13 P) ... Pages in category "20th century in science" The following 115 pages are in this category, out of 115 ...
2008 – 16-year study of stellar orbits around Sagittarius A* provides strong evidence for a supermassive black hole at the centre of the Milky Way galaxy; 2009 – Planck begins observations of cosmic microwave background; 2012 – Higgs boson found by the Compact Muon Solenoid [12] and ATLAS [13] experiments at the Large Hadron Collider
Nevertheless, despite its successes, the U.S. space program could not match many major achievements of the Soviet space program, such as rover-based space exploration and image and video transfer from the surface of another planet, until the early 21st century. [216] [217]
Hence, the progress of one era, termed a "golden age" has appeared to mark the completion of physics as a science. Yet, this perception has turned out to be erroneous. For example, around 1980, Stephen Hawking predicted the end of theoretical physics within 20 years. Around 2001, he amended his prediction to twenty years more from that year.
[114] [115] Maya writing, which was developed by 200 BCE, widespread by 100 BCE, and rooted in Olmec and Zapotec scripts, contains easily discernible calendar dates in the form of logographs representing numbers, coefficients, and calendar periods amounting to 20 days and even 20 years for tracking social, religious, political, and economic ...
An image from John Dalton's A New System of Chemical Philosophy, the first modern explanation of atomic theory.. This timeline of chemistry lists important works, discoveries, ideas, inventions, and experiments that significantly changed humanity's understanding of the modern science known as chemistry, defined as the scientific study of the composition of matter and of its interactions.