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Explanation: Conventional theories suggest that this cluster of galaxies should not exist. Each fuzzy spot in this false-color Hubble Space Telescope image of the central regions of a newly discovered galaxy cluster is a galaxy similar in mass to our own Milky Way. The cluster is one of the most massive known, contains thousands of galaxies, and is a few million light-years across. But it is also 8 billion light-years distant and so formed when the Universe was only about half its present age. Ironically, if the total mass of the Universe is large, modern theories predict that clusters of galaxies as massive as nearby clusters should not have existed at such early times and great distances. One explanation for this cluster's presence is that the Universe we live in is not massive enough to eventually halt its expansion - contradicting some current standard views of cosmology.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: cosmology - universe - galaxy cluster
Publications with words: cosmology - universe - galaxy cluster
See also:
- APOD: 2024 December 1 Á Cosmic Latte: The Average Color of the Universe
- APOD: 2024 October 20 Á Dark Matter in a Simulated Universe
- APOD: 2024 July 1 Á Time Spiral
- APOD: 2023 December 31 Á Illustris: A Simulation of the Universe
- Galaxy Cluster Abell 370 and Beyond
- Webb's First Deep Field
- APOD: 2023 July 5 Á A Map of the Observable Universe