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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 is a timeline of Solar System exploration ordering events in the exploration of the Solar System by date of spacecraft launch. It includes: All spacecraft that have left Earth orbit for the purposes of Solar System exploration (or were launched with that intention but failed), including lunar probes. A small number of pioneering or notable ...
Dorothea Klumpke (1861–1942) Vicky Kalogera, Greek astrophysicist. Lyudmila Karachkina (born 1948), Russian astronomer studying astrometry and minor planets. Victoria Kaspi (born 1967), American-Canadian astrophysicist and instructor. Lisa Kewley (born 1974), Australian astronomer studying galactic evolution.
Pelageya Shajn discovered 19 minor planets (see list below) [1] and about 140 variable stars. [8] In 1949, she also co-discovered 61P/Shajn–Schaldach, a periodic comet of the Jupiter family. [9] However, the non-periodic comet C/1925 F1 (Shajn-Comas Solá; also known as Comet 1925 VI or Comet 1925a) was co-discovered by her husband rather ...
1845 – John Adams predicts the existence and location of an eighth planet from irregularities in the orbit of Uranus. [138] 1845 – Karl Ludwig Hencke discovers a fifth body between Mars and Jupiter, Astraea [139] and, shortly thereafter, new objects were found there at an accelerating rate.
From 1966 to 1988, Tamara Smirnova was a staff member of the Institute of Theoretical Astronomy at Leningrad. [2] She is credited by the Minor Planet Center with the discovery of 135 numbered minor planets during 1966–1984. [1] She also co-discovered the periodic comet 74P/Smirnova-Chernykh, along with Nikolai Stepanovich Chernykh.
At that time, Uranus, Neptune, nor the asteroid belts had been discovered yet. Discovery and exploration of the Solar System is observation, visitation, and increase in knowledge and understanding of Earth 's "cosmic neighborhood". [ 1 ] This includes the Sun, Earth and the Moon, the major planets Mercury, Venus, Mars, Jupiter, Saturn, Uranus ...
720,000 km/h (450,000 mi/h) [10] Orbital period. ~230 million years [10] The Solar System[d] is the gravitationally bound system of the Sun and the objects that orbit it. [11] It formed about 4.6 billion years ago when a dense region of a molecular cloud collapsed, forming the Sun and a protoplanetary disc.