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Astronomers notice a new bright emission line in the spectrum of the Sun's atmosphere during an eclipse. The emission line is caused by an element's giving out light, and British astronomer Norman Lockyer concludes that it is an element unknown on Earth.
1031 – Chinese astronomer and scientist Shen Kuo calculates the distance between the Earth and the Sun in his mathematical treatises. [47] [failed verification] 1054 – Chinese astronomers record the sighting of the Crab Nebula as a "guest star", and they record several other supernovae during the 10th and 11th centuries. [48]
Mid/late-2021 – Science first light of the Vera C. Rubin Observatory is anticipated for 2021 with full science operations to begin a year later. [23] [24] [25] Nancy Grace Roman Space Telescope, part of NASA's Exoplanet Exploration Program. Launch is tentatively scheduled for 2027.
1962 — A.S. Bennett of the Cambridge Radio Astronomy Group publishes the Revised 3C Catalogue of 328 radio sources; 1965 — Gerry Neugebauer and Robert Leighton begin a 2.2 micrometre sky survey with a 1.6-meter telescope on Mount Wilson; 1982 — IRAS space observatory completes an all-sky mid-infrared survey
The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...
This timeline of cosmological theories and discoveries is a chronological record of the development of humanity's understanding of the cosmos over the last two-plus millennia. Modern cosmological ideas follow the development of the scientific discipline of physical cosmology .
Download as PDF; Printable version; In other projects ... Timeline of solar astronomy. ... explained by Spörer's law;
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