Das Weltall ist immer noch ein großes Mysterium.
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Download von www.picturedesk.com am 17.03.2025 (15:07). *** SERVICEBILD *** This handout photograph obtained on September 13, 2020 and released by NASA/ESA Hubble Space Telescope shows many colourful stars packed close together in this image of the globular cluster NGC 1805. - This tight grouping of thousands of stars is located near the edge of the Large Magellanic Cloud, a satellite galaxy of our own Milky Way. The stars orbit closely to one another, like bees swarming around a hive. In the dense centre of one of these clusters, stars are 100 to 1000 times closer together than the nearest stars are to our Sun, making planetary systems around them unlikely. The striking difference in star colours is illustrated beautifully in this image, which combines two different  types of light: blue stars, shining brightest in near-ultraviolet light, and red stars, illuminated in red and near-infrared. Space telescopes like Hubble can observe in the ultraviolet because they are positioned above Earth’s atmosphere, which absorbs most of this wavelength, making it inaccessible to ground-based facilities. This young globular cluster can be seen from the southern hemisphere, in the Dorado constellation, which is Portugese for dolphinfish. Usually, globular clusters contain stars which are born at the same time; however, NGC 1805 is unusual as it appears to host two different populations  of stars with ages millions of years apart. Observing such clusters of stars can help astronomers understand how stars evolve, and what factors determine whether they end their lives as white dwarfs, or e - 20200913_PD13228 - Rechteinfo: Servicebild (SB) Bei diesem Bild ist PictureDesk ausschließlich technischer Dienstleister und stellt eine technische Bearbeitungsgebühr in Rechnung. PictureDesk ist weder Urheber noch Rechteinhaber. Die Nutzung liegt in alleiniger Verantwortung des Kunden. Nur für redaktionelle Nutzung! Werbliche Nutzung erfordert Freigabe: bitte schicken Sie uns eine Anfrage.
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