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Annie Jump Cannon's success at this activity made her famous in her own lifetime, and she produced a stellar classification system that is still in use today. Antonia Maury discerned in the spectra a way to assess the relative sizes of stars, and Henrietta Leavitt showed how the cyclic changes of certain variable stars could serve as distance ...
A mysterious radio blast from space detected in 2022 originated in the magnetic field of an ultra-dense neutron star 200 million light years away.. Known as fast radio bursts, or FRB, such brief ...
The Henry Draper Catalogue (HD) is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the Henry Draper Extension (HDE), published between 1925 and 1936, which gave classifications for 46,850 more stars, and by the Henry Draper Extension Charts (HDEC), published from 1937 to 1949 in the form of charts ...
Astronomer George Ellery Hale, whose vision created Palomar Observatory, built the world's largest telescope four times in succession. [8] He published a 1928 article proposing what was to become the 200-inch Palomar reflector; it was an invitation to the American public to learn about how large telescopes could help answer questions relating to the fundamental nature of the universe.
Capacitively coupled plasma; Carbon nanotube metal matrix composites; Cassini–Huygens, Cassini Plasma Spectrometer; Cathode ray; Cathodic arc deposition; Ceramic discharge metal-halide lamp
Georg Wilhelm Steller (10 March 1709 – 14 November 1746) was a German-born naturalist and explorer who contributed to the fields of biology, zoology, and ethnography.He participated in the Great Northern Expedition (1733–1743) and his observations of the natural world helped the exploration and documentation of the flora and fauna of the North Pacific region.
10–30–100 [clarification needed] MK in stellar flares; 20 MK in novae; 23 MK, beryllium-7 fusion range; 60 MK above Eta Carinae; 85 MK (15 keV) in a magnetic confinement fusion plasma; 200 MK at helium star and gravital helium-4 fusion range; 230 MK, gravital carbon-12 fusion range; 460 MK, gravital neon fusion–disproportionation range
Tod Machover – MIT Media Lab; Austin E. Quigley, Ph.D. – Dean of Columbia College of Columbia University; John R. Rickford, B.A. 1971 – Professor of Linguistics at Stanford University and African American Vernacular English or Ebonics expert; Sally Sedgwick, B.A. 1978 – Distinguished Professor of Philosophy at University of Illinois at ...