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Link to original content: http://ga.wikipedia.org/wiki/Réaltra
Réaltra - Vicipéid Jump to content

Réaltra

Athraigh naisc
Ón Vicipéid, an chiclipéid shaor.
Tá NGC 4414, réaltra bíseach tipiciúil sa réaltbhuíon Coma Berenices, timpeall 55,000 solasbhliain ar trastomhas agus timpeall 60 milliún solasbhliain ón Domhan.

Is éard atá i réaltra ná córas réaltaí, iarsmaí réaltacha, gás idir-réaltach, deannach, damhna dorcha, ceangailte le imtharraingt.[1][2] Réaltraí, ar an meán measta 100 milliún réalta,[3] raon i méid ó abhaic a bhfuil níos lú ná céad milliún réalta, go dtí na réaltraí is mó ar a dtugtar - ollfathaigh le céad trilliún réalta,[4] fithis gach ceann acu lárionad mais a réaltra.

Tagairtí

[cuir in eagar | athraigh foinse]
  1. ↑ Sparke, L. S.; Gallagher, J. S. III (2000). Galaxies in the Universe: An Introduction. Cambridge University Press. ISBN 9780521597401. Cartlainne ón mbunleathanach ar 24 Márta 2021.
  2. ↑ Hupp, E.; Roy, S.; Watzke, M. (12 Lúnasa 2006). "NASA Finds Direct Proof of Dark Matter" Curtha i gcartlann 2020-03-28 ar an Wayback Machine. NASA. Cartlainne ón mbunleathanach ar 28 Márta 2020.
  3. ↑ Howell, Elizabeth; Harvey, Ailsa (February 11, 2022). "How many stars are in the universe? - Can we estimate the total number of stars?". Space.com.
  4. ↑ Uson, J. M.; Boughn, S. P.; Kuhn, J. R. (1990). "The central galaxy in Abell 2029 – An old supergiant". Science. 250 (4980): 539–540. Bibcode:1990Sci...250..539U. doi:10.1126/science.250.4980.539. PMID 17751483. S2CID 23362384.
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