Pluto Space Hauptnavigation
Pluto ist der größte und zweitmassivste bekannte Zwergplanet und das am längsten bekannte Objekt des Kuipergürtels. Er besitzt etwa ein Drittel des Volumens. Zum Startzeitpunkt galt Pluto noch als vollwertiger Planet und war als einziger Planet noch von keiner Raumsonde erforscht worden. Wenige Monate nach dem. Am Februar feiert Pluto das Jubiläum seiner Entdeckung durch Clyde Tombaugh. Mehr als 70 Jahre lang galt er als neunter Planet unseres. Zwergplanet Pluto. Pluto, früher der äußerste Planet des Sonnensystems, ist eine echte Herausforderung für Sterngucker. Denn Pluto ist nicht nur sehr weit weg. Die erste Sonde, die Pluto wirklich nahe kam, war New Horizons: flog sie mit nur Kilometern Abstand an dem fernen Zwergplaneten vorbei und.
Die erste Sonde, die Pluto wirklich nahe kam, war New Horizons: flog sie mit nur Kilometern Abstand an dem fernen Zwergplaneten vorbei und. Zwergplanet Pluto. Pluto, früher der äußerste Planet des Sonnensystems, ist eine echte Herausforderung für Sterngucker. Denn Pluto ist nicht nur sehr weit weg. von mehr als Ergebnissen oder Vorschlägen für "Pluto planet".
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Though Pluto is now famously frigid, it may have started off as a hot world that formed rapidly and violently, a new study finds. Pluto's thin, blue-tinged air may not collapse when the dwarf planet is far from the sun.
The list of Pluto's neighbors just got considerably longer, potentially boosting scientists' odds of finding the putative Planet Nine.
Pluto's discovery wouldn't have been possible, astronomers have realized, without the calculations of a mathematician whom history has forgotten.
Pluto's heart-shaped feature, which NASA's New Horizons spacecraft discovered during its epic July flyby of Pluto, drives atmospheric circulation on the dwarf planet, a new study suggests.
But it's still a little fuzzy, as it turns out. A year after New Horizons buzzed its second target, Arrokoth, a wealth of science has been revealed.
As the s come to a close, it's time to revisit how some of the biggest space science stories shaped the decade.
Hopefully you weren't too attached to " MU69," because the most distant object ever explored has a new name. The long-standing debate over Pluto's planethood recently got a public boost from NASA Administrator Jim Bridenstine, who said the world should definitely be a planet.
At some point in the ancient past, the planet could have had an atmosphere roughly 40 times thicker than on Mars. In , scientists announced that they might have spotted clouds in Pluto's atmosphere using New Horizons data.
Investigators saw seven bright features that are near the terminator the boundary between daylight and darkness , which is commonly where clouds form.
The features are all low in altitude and roughly about the same size, indicating that these are separate features.
The composition of these clouds, if they are indeed clouds, would likely be acetylene, ethane and hydrogen cyanide.
Atmospheric composition : Methane, nitrogen. Observations by New Horizons show that Pluto's atmosphere extends as far as 1, miles 1, km above the surface of the dwarf planet.
Magnetic field : It remains unknown whether Pluto has a magnetic field, but the dwarf planet's small size and slow rotation suggest it has little to no such field.
Chemical composition : Pluto probably consists of a mixture of 70 percent rock and 30 percent water ice. Internal structure : The dwarf planet probably has a rocky core surrounded by a mantle of water ice, with more exotic ices such as methane, carbon monoxide and nitrogen ice coating the surface.
Pluto's rotation is retrograde compared to the solar systems' other worlds; it spins backward, from east to west. Average distance from the sun : 3,,, miles 5,,, km — Perihelion closest approach to the sun : 2,,, miles 4,,, km — Aphelion farthest distance from the sun : 4,,, miles 7,,, km — In , astronomers discovered that Pluto had a very large moon nearly half the dwarf planet's own size.
This moon was dubbed Charon, after the mythological demon who ferried souls to the underworld in Greek mythology. Because Charon and Pluto are so similar in size, their orbit is unlike that of most planets and their moons.
Both Pluto and Charon orbit a point in space that lies between them, similar to the orbits of binary star systems , For this reason, scientists refer to Pluto and Charon as a double dwarf planet, double planet or binary system.
Pluto and Charon are just 12, miles 19, km apart, less than the distance by flight between London and Sydney.
Charon's orbit around Pluto takes 6. This is because Charon hovers over the same spot on Pluto's surface, and the same side of Charon always faces Pluto, a phenomenon known as tidal locking.
While Pluto has a reddish tint, Charon appears more grayish. In its early days, the moon may have contained a subsurface ocean , though the satellite probably can't support one today.
Compared with most of the solar system's planets and moons, the Pluto-Charon system is tipped on its side in relation to the sun.
Observations of Charon by New Horizons have revealed the presence of canyons on the moon's surface. The deepest of those canyons plunges downward for 6 miles 9.
A long swatch of cliffs and troughs stretches for miles km across the middle of the satellite. A section of the moon's surface near one pole is covered in a much darker material than the rest of the planet.
Similar to regions of Pluto, much of Charon's surface is free of craters — suggesting the surface is quite young and geologically active.
Scientists saw evidence of landslides on its surface, the first time such features have been spotted in the Kuiper Belt. The moon may have also possessed its own version of plate tectonics , which cause geologic change on Earth.
In , scientists photographed Pluto with the Hubble Space Telescope in preparation for the New Horizons mission and discovered two other tiny moons of Pluto , now dubbed Nix and Hydra.