Plik:Our Solar System's Cousin?.jpeg

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Opis

OpisOur Solar System's Cousin?.jpeg	English: This artist's concept illustrates two planetary systems -- 55 Cancri (top) and our own. Blue lines show the orbits of planets, including the dwarf planet Pluto in our solar system. The 55 Cancri system is currently the closest known analogue to our solar system, yet there are some fundamental differences. The similarities begin with the stars themselves, which are about the same mass and age. Both stars also host big families of planets. Our solar system has eight planets, while 55 Cancri has five, making it the record-holder for having the most known exoplanets. In fact, 55 Cancri could have additional planets, possibly even rocky ones that are too small to be seen with current technologies. All of the planets in the two systems have nearly circular orbits. In addition, both planetary systems have giant planets in their outer regions. The giant located far away from 55 Cancri is four times the mass of our Jupiter, and completes one orbit every 14 years at a distance of five times that between Earth and the sun (about 868 million kilometers or 539 million miles). Our Jupiter completes one orbit around the sun every 11.9 years, also at about five times the Earth-sun distance (778 million kilometers or 483 million miles). Fifty-five Cancri is still the only known star besides ours with a planet in a distant Jupiter-like orbit. Both systems also contain inner planets that are less massive than their outer planets.
Data	27 stycznia 2013, 20:49:36
Źródło	http://planetquest.jpl.nasa.gov/image/94
Autor	NASA/JPL-Caltech

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	Ten plik jest w domenie publicznej ponieważ został stworzony przez NASA. Polityka praw autorskich NASA stwierdza, że „materiały NASA nie są chronione prawami autorskimi, chyba że zapisano inaczej”. (NASA copyright policy lub JPL Image Use Policy).
	Uwaga: Użycie dowolnego ze znaków graficznych NASA jest ograniczone przez prawo w USA 14 CFR 1221. Strony NASA udostępniają dużą liczbę zdjęć z radzieckiej, rosyjskiej, a także innych agencji kosmicznych. Nie muszą być one w domenie publicznej. Materiały z Kosmicznego Teleskopu Hubble'a mogą być objęte prawami autorskimi jeśli nie pochodzą bezpośrednio ze Space Telescope Science Institute[1]. Wszystkie materiały powstałe w ramach działalności sondy SOHO są objęte prawami autorskimi i wymagają zgody na ich komercyjne i nieedukacyjne użycie[2]. Zdjęcia pojawiające się na stronie Astronomy Picture of the Day (Astronomiczne zdjęcie dnia) mogą być objęte prawem autorskim[3].

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aktualny	18:50, 27 sty 2013		1435 × 939 (83 KB)	Stas1995	User created page with UploadWizard

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Tytuł lub opis obrazu	This artist's concept illustrates two planetary systems -- 55 Cancri (top) and our own. Blue lines show the orbits of planets, including the dwarf planet Pluto in our solar system. The 55 Cancri system is currently the closest known analogue to our solar system, yet there are some fundamental differences.The similarities begin with the stars themselves, which are about the same mass and age. Both stars also host big families of planets. Our solar system has eight planets, while 55 Cancri has five, making it the record-holder for having the most known exoplanets. In fact, 55 Cancri could have additional planets, possibly even rocky ones that are too small to be seen with current technologies. All of the planets in the two systems have nearly circular orbits. In addition, both planetary systems have giant planets in their outer regions. The giant located far away from 55 Cancri is four timesthe mass of our Jupiter, and completes one orbit every 14 years at a distance of five times that between Earth and the sun (about 868 million kilometers or 539 million miles). Our Jupiter completes one orbit around the sun every 11.9 years, also at about five times the Earth-sun distance (778 million kilometers or 483 million miles). Fifty-five Cancri is still the only known star besides ours with a planet in a distant Jupiter-like orbit. Both systems also contain inner planets that are less massive than their outer planets. The differences begin with the planets'masses. The planets orbiting 55 Cancri are all larger than Earth, and represent a"souped-up"version of our own solar system. In fact, this is the first star that boasts more giant planets than our sun!The arrangement of the planetary systems is also different. The inner four planets of 55 Cancri are all closer to the star than Earth is to the sun. The closest, about the mass of Uranus, whips around the star in just under three days at a distance of approximately 5.6 million kilometers (3.5 million miles). The second planet out from the star is a little smaller than Jupiter and completes one orbit every 14.7 days at a distance of approximately 17.9 million kilometers (11.2 million miles). The third planet out from the star is similar in mass to Saturn and completes one orbit every 44 daysat a distance of approximately 35.9 million kilometers (22.3 million miles). The fourth planet is about half the mass of Saturn, orbits every 260 days and is approximately 116.7 million kilometers (72.5 million miles) away from the star.
Krótki tytuł	Our Solar System's Cousin?
Nagłówek	This artist's concept illustrates two planetary systems -- 55 Cancri (top) and our own. Blue lines show the orbits of planets, including the dwarf planet Pluto in our solar system.
Data i czas utworzenia oryginału	6 lis 2007