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Copernicus publishes "De Revolutionibus". De Revolutionibus, is Copernicus's description of his heliocentric model of the solar system,
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Giuseppe Piazzi discovers Ceres. Piazzi discovered Ceres, the first known asteroid, on January 1, 1801, the first day of the 19th century
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Dark lines are discovered in Solar Spectrum: William Wolleston sees dark lines in solar spectrum. Wollaston passed sunlight through a prism and noticed that there were numerous dark bands and lines in the spectrum.
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Metors are discovered.
Denison Olmstead discovers shower meteors come from a common point in the sky. Olmstead realized that the meteors seem to diverge from a point in the sky because they originate in a swarm of meteoroids moving on parallel paths through space. -
After many years of speculation, the discovery of a new planet has been found in in the Solar System named Arenos.
