Fitxategi:Celestial fossils (potw2409a).jpg
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DeskribapenaCelestial fossils (potw2409a).jpg |
English: This densely populated group of stars is the globular cluster known as NGC 1841, which is found within the Large Magellanic Cloud (LMC), a satellite galaxy to the Milky Way galaxy that lies about 162 000 light-years away. Satellite galaxies are galaxies that are bound by gravity in orbits around a more massive host galaxy. We typically think of our galaxy’s nearest galactic companion as being the Andromeda Galaxy, but it would be more accurate to say that Andromeda is the nearest galaxy that is not in orbit around the Milky Way galaxy. In fact, our galaxy is orbited by tens of known satellite galaxies that are far closer than Andromeda, the largest and brightest of which is the LMC, which is easily visible to the naked eye from the southern hemisphere (although this is decreasingly the case thanks to light pollution). The LMC is home to many globular clusters. These celestial bodies fall somewhere between open clusters — which are much less dense and tightly bound — and small, compact galaxies. Increasingly sophisticated observations have revealed the stellar populations and other characteristics of globular clusters to be varied and complex, and it is not well understood how these tightly-packed clusters form. However, there are certain consistencies across all globular clusters: they are very stable and so are capable of lasting a long time, and can therefore be very old. This means that globular clusters often contain large numbers of very old stars, which make them something akin to celestial ‘fossils’. Just as fossils provide insight into the early development of life on Earth, globular clusters such as NGC 1841 can provide insights into very early star formation in galaxies.[Image Description: A cluster of stars. Most of the stars are very small and uniform in size, and they are notably bluish and cluster more densely together towards the centre of the image. Some appear larger in the foreground. The stars give way to a dark background at the corners.] |
Data | 2024ko otsailaren 26a (igoera data) |
Jatorria | Celestial fossils |
Egilea | ESA/Hubble & NASA, A. Sarajedini, F. Niederhofer |
Beste bertsioak |
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Lizentzia
ESA/Hubble images, videos and web texts are released by the ESA under the Creative Commons Attribution 4.0 International license and may on a non-exclusive basis be reproduced without fee provided they are clearly and visibly credited. Detailed conditions are below; see the ESA copyright statement for full information. For images created by NASA or on the hubblesite.org website, or for ESA/Hubble images on the esahubble.org site before 2009, use the {{PD-Hubble}} tag.
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26 otsaila 2024
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Fitxategiaren historia
Data/orduan klik egin fitxategiak orduan zuen itxura ikusteko.
Data/Ordua | Iruditxoa | Neurriak | Erabiltzailea | Iruzkina | |
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oraingoa | 11:01, 26 otsaila 2024 | 3.909 × 3.046 (6,19 MB) | OptimusPrimeBot | #Spacemedia - Upload of https://cdn.esahubble.org/archives/images/large/potw2409a.jpg via Commons:Spacemedia |
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Metadatuak
Fitxategi honek informazio gehigarri dauka, ziurrenik kamera digital edo eskanerrak egiterako momentuan gehitutakoa. Hori dela-eta, jatorrizko fitxategi hori aldatu egin bada, baliteke xehetasun batzuek errealitatearekin bat ez egitea.
Datuen sorreraren data eta ordua | 06:00, 26 otsaila 2024 |
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Erabilitako softwarea | Adobe Photoshop 25.3 (Windows) |
Fitxategi aldaketaren data eta ordua | 15:23, 8 otsaila 2024 |
Digitalizazioaren data eta ordua | 12:44, 28 azaroa 2023 |
Datuaren metadata azken aldiz aldatu da | 16:23, 8 otsaila 2024 |
Jatorria | ESA/Hubble |
Kreditua/Emalea | ESA/Hubble & NASA, A. Sarajedini, F. Niederhofer |
Jatorrizko dokumentuaren ID bakarra | xmp.did:5b92c5c5-01d4-4547-96b3-c30273cb3184 |
Izenburua laburra |
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Irudiaren izenburua |
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Hitz gakoak | NGC 1841 |
Kontratuaren informazioa |
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr Baltimore, MD, 21218 United States |
Erabilera baldintzak |
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IIM bertsioa | 4 |