solar system

To be or Not to be a Planet – Eris, the planet of Discord

To be or Not to be a Planet – Eris, the planet of Discord

On October 21, 2003, a photograph of the nocturnal sky was taken, where almost 2 years later, in January 2005, evidence was raised that there might be a 10th planet at the borders of our solar system: Eris, located in the Kuiper Belt and named after the Greek goddess of discord. And discord it should be, because Eris as a planet is rather small and astronomers were arguing, whether it is a…
Read more
James van Allen and the Weather in Space

James van Allen and the Weather in Space

On September 7, 1914, astrophysicist and space pioneer Dr. James Van Allen was born. The Van Allen radiation belts were named after him, following the 1958 satellite missions (Explorer 1 and Explorer 3) in which Van Allen had argued that a Geiger counter should be used to detect charged particles. “Apparently, something happens on the sun. It sends out a burst of gases. The reservoirs above our earth shake like a bowl…
Read more
The First Image from Abroad – Earth Rising and Lunar Orbiter 1

The First Image from Abroad – Earth Rising and Lunar Orbiter 1

On August 23, 1966, the space probe Lunar Orbiter 1 sent the very first images of the earth rising above the moon‘s surface back to earth. Lunar Orbiter 1 was part of the Lunar Orbiter program started in the 1960’s in preparation to the Apollo moon landing. The project consisted of five unmanned spacecrafts, equally built to take pictures of the moon. The purpose was to find a safe landing place for…
Read more
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…
Read more
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…
Read more
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…
Read more
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…
Read more
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…
Read more
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…
Read more
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…
Read more
Relation Browser
Timeline
0 Recommended Articles:
0 Recommended Articles: