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Kuiper belt

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Modern Planetary Science with Gerard Kuiper

Modern Planetary Science with Gerard Kuiper

Tabea Tietz
On December 7, 1905, Dutch-American astronomer Gerard Peter Kuiper was born. Considered by many to be the father of modern planetary science, Kuiper is the eponymous namesake of the Kuiper belt, a region of the Solar System beyond the planets, extending from the orbit of Neptune (at 30 AU) to approximately 50 AU from the Sun. Kuiper also discovered Miranda, a moon of Uranus, and Nereid, a moon of Neptune. “The Kuiper Belt…
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astronomy
Johann Daniel Titius and the Titius-Bode Law

Johann Daniel Titius and the Titius-Bode Law

Tabea Tietz
On January 2, 1729, German astronomer Johann Daniel Titius was born. He is best known for formulating the Titius–Bode law, a hypothesis that the bodies in some orbital systems, including the Sun’s, orbit at semi-major axes in a function of planetary sequence. The formula suggests that, extending outward, each planet would be approximately twice as far from the Sun as the one before. The hypothesis correctly anticipated the orbits of Ceres and Uranus,…
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astronomy
The Discovery of Charon, Pluto’s largest Moon

The Discovery of Charon, Pluto’s largest Moon

Tabea Tietz
On June 22, 1978, US astronomer James Christie discovered Charon, the largest moon of Pluto. Although there was a discussion after the reclassification of Pluto as a dwarf, Charon is not in the list of dwarf planets currently recognized by the IAU. A Bulge on Pluto On June 22, 1978,  James Christy had examined the magnified images of the former planet Pluto, taken with the 61-inch Flagstaff telescope two months prior. He noticed a…
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