#de_systemate_orbis_cometici,_deque_admirandis_coeli_characteribus

De systemate orbis cometici, deque admirandis coeli characteribus

Work by Giovanni Battista Hodierna

De systemate orbis cometici, deque admirandis coeli characteribus is a small tract on comets and other celestial objects by the Sicilian astronomer Giovanni Battista Hodierna published in 1654. It contains a catalogue of comets and other celestial objects, but had limited circulation and the work was forgotten until 1985. In this work, Hodierna expressed the belief that comets were made of a more terrestrial substance, and considered nebulae to be made up of stars.

Mon 8th

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