solar system

Shoemaker-Levy 9 hits Jupiter

Shoemaker-Levy 9 hits Jupiter

On July 22, 1994, the last parts of the comet Shoemaker-Levy 9 collided with the largest planet within our solar system, Jupiter. This was the first time, that an extraterrestrial collision of two objects could be directly observed. Comet Shoemaker-Levy 9 approaching Jupiter Shoemaker-Levy 9 got its name from the US-American scientists Eugene Shoemaker, his wive Carolyn, and David Levy, it was the 9th periodic comet to be discovered. The first prediction…
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To Boldly Go Where No Man Has Gone Before – Voyager 2

To Boldly Go Where No Man Has Gone Before – Voyager 2

On July 9, 1979 the interplanetary spacecraft Voyager 2 passed Jupiter, the largest planet in the Solar System. The space probe had been launched by NASA on August 20, 1977 to study the outer Solar System and eventually to push forward into interstellar space. Until today,  operating for more than 30 years the spacecraft still receives routine commands and transmits data back to the Deep Space Network, a world-wide network of large antennas…
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Neptune, Oceanos, or ‘Le Verrier’ – How to name a new planet?

Neptune, Oceanos, or ‘Le Verrier’ – How to name a new planet?

On June 9, 1812, German astronomer Johann Gottfried Galle was born. Also in Germany hardly anybody might know Galle today. Well, maybe except most astronomers, who will certainly know him, because he has discovered the planet Neptune. No, he didn’t do it all by himself. Actually, we’ve had already several articles on astronomers involved in the discovery of Neptune [5,6,7] Johann Gottfried Galle originally had sent a copy of his PhD thesis, in…
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Christiaan Huygens and the Discovery of Saturn Moon Titan

Christiaan Huygens and the Discovery of Saturn Moon Titan

On March 25, 1655, Saturn‘s largest moon Titan was discovered by astronomer and physicist Christiaan Huygens. Titan is considered as the most Earth-like moon discovered so far and the second largest in the solar system. Christiaan Huygens was born into an influential family and provided with a decent education all his life, leaning several foreign languages mathematics, logic, and rethoric. His father was friends with Galileo Galilei and René Descartes who early…
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Mariner 10 and the Swing-By at Planet Venus

Mariner 10 and the Swing-By at Planet Venus

On February 5, 1974, space probe Mariner 10 passed by at planet Venus shooting 4,165 high resolution pictures and continued its journey to Mercury, using the slingshot maneuver. Mariner 10 was the last of NASA‘s Mariner program and executed to measure the environment of Mercury as well as its surface and its atmosphere. The spacecraft was the second of all time to perform the gravitational slingshot maneuver, using Venus to bend its flight…
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Caroline Herschel – The Comet Sweeper

Caroline Herschel – The Comet Sweeper

On January 9, 1848, Caroline Lucretia Herschel, German-British astronomer and sister of astronomer Sir William Herschel, passed away at age 98. She is best know for the discovery of several comets, in particular the periodic comet 35P/Herschel-Rigollet, which bears her name. Caroline Herschel grew up in the German town Hannover where she worked at her parent‘s home as a housekeeper and received a musical education followed by a starting career as a concert…
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Jupiter and the Galilean Moons

Jupiter and the Galilean Moons

Montage of Jupiter’s four Galilean moons, in a composite image from top to bottom: Io, Europa, Ganymede, Callisto ©NASA On January 7, 1610, physicist and astronomer Galileo Galilei turned his new telescope to the nocturnal sky to watch the planet Jupiter and discovered the eponymous four moons of Jupiter, Io, Europa, Ganimede, and Callisto.[1,2] Based only on uncertain descriptions of the first practical telescope which the Dutch lens maker Hans Lippershey [3] tried to…
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James Challis and his failure to discover the planet Neptune

James Challis and his failure to discover the planet Neptune

On December 12, 1803, English clergyman, physicist and astronomer James Challis was born. Challis investigated a wide range of physical phenomena though made few lasting contributions outside astronomy. He is best remembered for his missed opportunity to discover the planet Neptune in 1846. James Challis was born in Braintree, Essex, UK, where his father, John Challis, was a stonemason.After attending Braintree School, the Revd Daniel Copsey’s school, Braintree, and Mill Hill School,…
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Venera 3 and the Soviet Venera Space Probe Program

Venera 3 and the Soviet Venera Space Probe Program

On November 16, 1965, Soviet spacecraft Venera 3 was launched. The Venera program space probe was built and launched by the Soviet Union to explore the surface of Venus. It possibly crashed on Venus on 1 March 1966, possibly making Venera 3 the first space probe to hit the surface of another planet. The Venera series space probes were developed by the Soviet Union between 1961 and 1984 to gather data from…
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Jean Sylvain Bailly and the Orbit of Halley’s Comet

Jean Sylvain Bailly and the Orbit of Halley’s Comet

On September 15, 1736, French astronomer, mathematician, freemason, and political leader of the early part of the French Revolution Jean Sylvain Bailly was born. Bailly computed an orbit for Halley’s Comet (1759) and studied the four satellites of Jupiter then known. He was the first Mayor of Paris and presided over the Tennis Court Oath. Jean Sylvain Bailly came from a family of artists. His father was an artist and supervisor of the…
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