Planet X Mythos entlarvt

Planet X myth debunked

Es war ein schwer zu erreichendes Planeten, dass für 200 Jahren erschienen zu erklären Uranus'S wackelig Orbit. Und es war die Schwester Sonne nahe zu sein theoretisiert unsere Sonnensystem dass verursacht Asteroiden auf die Erde zum Ausbrechen.

Es gibt nur ein Problem: weder “Planet X” noch “Nemesis” je existiert, Forscher jetzt sagen.

Oder wahrscheinlich nicht.

“Der äußere Sonnensystem enthalten wahrscheinlich keinen großen Gasriesen Planeten (“Planet X”), oder eine kleine, Begleitstern (“Nemesis”),” University of Pennsylvania Astronom Kevin Luhman abgeschlossen, die gerichtet, die Studie der NASA-Weitfeld mit Infrarot-Umfrage Explorer (WEISE) Fernrohr.

Die Ergebnisse wurden in der jüngsten Ausgabe von The Astrophysical Journal veröffentlicht.

Die meisten Theorien hatte geschätzt, Planet X bis vier Mal so groß wie Jupiter bis zu sein — der größte Planet in unserem Sonnensystem.

Sie schlugen vor, es würde einige gefunden werden 1,486 Milliarden Kilometer (923 Milliarden Meilen) from the sun, oder über 10,000 times farther than the Earth’s orbit.

But the images gathered by the telescope did not detect any object larger than Jupiter.

Luhman doesn’t rule out the possibility that a planet is lurking somewhere in the asteroid belt.

A computer generated NASA montage obtained 29 August 2002 from images collected by the Voyager 2 spacecraft shows Neptune (Lower-L) as it would appear from a spacecraft approaching Triton, Neptune’s largest moon

It would be hard to find if it were closely aligned with a bright star that blinds the telescope or were much smaller than had been theorized.

But after this latest survey, Luhman said the odds of finding one are very unlikely: “That is like a one in a hundred chance.

History of Planet X

Scientists first imagined the existence of Planet X in 1781, when they discovered Uranus, a gas giant that astonished astronomers with its orbital variations, apparently incompatible with Newton’s laws of gravity.

Observers concluded that these irregularities could be explained by the existence of another, unknown planet that was exerting its own gravitational force.

English: This is an image of the planet Uranus...

Englisch: This is an image of the planet Uranus taken by the spacecraft Voyager 2 in 1986 (Bildnachweis: Wikipedia)

Attempts to track this mysterious Planet X led to the discovery of Neptune in 1846. But the estimated mass of Neptune couldn’t explain the deviations of Uranus’s orbit.

That led astronomers to continue their search for Planet X — was, im Gegenzug, led to the discovery of Pluto in 1930. But the dwarf planet was also too small to explain Uranus’s irregular path around the sun.

Schließlich, in the 1990s, researchers determined that they had slightly overestimated the mass of Neptune, which meant the planet could in fact be the reason for Uranus’s orbital behavior.

Yet Planet X believers were still not convinced.

Sister sun killed dinosaurs? –

The existence of Nemesis, a sun-like star nearby, was first posited in the 1980s. The star, by occasionally coming closer to the sun, interfered with the orbit of comets and asteroids leading them to occasionally hit the Earth.

Collisions like these are blamed for the five mass extinctions over the last 540 million yearsthe most recent being the dinosaur extinction 65 Millionen Jahren.

So over the years, there have been different pieces of evidence suggesting there might be something there,” Luhman explained to AFP.

But the WISE telescope didn’t find anything.

The hunt for Planet X and Nemesis may have turned up empty, but the study did uncover 3,525 stars and brown dwarfscelestial objects whose mass puts them between a star and a large planetwithin 500 light years of the sun.

Neighboring star systems that have been hiding in plain sight just jump out in the WISE data,” said Ned Wright, ein Universität von Kalifornien, Los Angeles astronomer who contributed to the study.

Quelle: afp.com

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