Dragon Storm
Dragon Storm är namnet på en stor, ljus och komplex storm i Saturnus södra hemisfär.[1] Den namngavs vid upptäckten i september, 2004 och fick sitt namn på grund av molnformationernas ovanliga form. [2] Stormen är långlivad och flammar i perioder upp i nya dramatiska plymer, vilka sedan försvinner.[3] Till sitt ursprung påminner fenomenet om den Stora röda fläcken på Jupiter, ett stort röd- eller brunfärgat anticyklonisk stormsystem som observerats sedan 1830. Dragon Storm avger starka radiovågor som forskarna inom projektet Cassini-Huygens liknar vid blixtar på jorden.[2]
Källor
- Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, tidigare version.
Noter
- ^ ”Saturn’s Wildest Weather” (på engelska). National Geographic. Oktober 2010. Arkiverad från originalet den 28 november 2010. https://web.archive.org/web/20101128190251/http://images.nationalgeographic.com/wpf/media-content/file/Saturns-Wildest-Weather-2pg-cb1287075737.pdf. Läst 1 maj 2015.
- ^ [a b] ”Cassini – Unlocking Saturn’s Secrets” (på engelska). nasa.gov. NASA (National Aeronautical Space association). Arkiverad från originalet den 31 december 2015. https://web.archive.org/web/20151231085713/http://www.nasa.gov/mission_pages/cassini/multimedia/pia06197.html. Läst 1 maj 2015.
- ^ ”25 february 2005” (på engelska). Astronomy Picture of the Day. NASA (National Aeronautical Space association). http://apod.nasa.gov/apod/ap050225.html. Läst 1 maj 2015.
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Full Disk of Saturn.jpg
NASA's Voyager 1 took this photograph of Saturn on Oct. 18, 1980, 34 million kilometers (21.1 million miles) from the planet. The photograph was taken on the last day that Saturn and its rings could be captured within a single narrow-angle camera frame as the spacecraft closed in on the planet for its nearest approach on Nov. 12. Dione, one of Saturn's inner satellites, appears as three color spots just below the planet's south pole. An abundance of previously unseen detail is apparent in the rings. For example, a gap in the dark, innermost ring, called the C-ring or crepe ring, is clearly shown. Material is seen within the relatively wide Cassini Division, separating the middle, B-ring from the outermost ring, the A-ring. The Encke Division is shown near the outer edge of the A-ring. The detail in the rings' shadows cast on the planet is of particular interest: the broad, dark band near the equator is the shadow of the B-ring; the thinner, brighter line is just to the south of the shadow of the less dense A-ring.
NASA's Voyager 1 took this photograph of Saturn on Oct. 18, 1980, 34 million kilometers (21.1 million miles) from the planet. The photograph was taken on the last day that Saturn and its rings could be captured within a single narrow-angle camera frame as the spacecraft closed in on the planet for its nearest approach on Nov. 12. Dione, one of Saturn's inner satellites, appears as three color spots just below the planet's south pole. An abundance of previously unseen detail is apparent in the rings. For example, a gap in the dark, innermost ring, called the C-ring or crepe ring, is clearly shown. Material is seen within the relatively wide Cassini Division, separating the middle, B-ring from the outermost ring, the A-ring. The Encke Division is shown near the outer edge of the A-ring. The detail in the rings' shadows cast on the planet is of particular interest: the broad, dark band near the equator is the shadow of the B-ring; the thinner, brighter line is just to the south of the shadow of the less dense A-ring.