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Explanation: How did the universe evolve from such a smooth beginning? To help understand, computational cosmologists and NASA produced the featured time-lapse animated video depicting a computer simulation of part of the universe. The 100-million light-year simulation starts about 20 million years after the Big Bang and runs until the present. After a smooth beginning, gravity causes clumps of matter to form into galaxies which immediately begin falling toward each other. Soon, many of them condense into long filaments while others violently merge into a huge and hot cluster of galaxies. Investigating of potential universe attributes in simulations like this have helped shape the engineering design the James Webb Space Telescope, currently scheduled for launch in late 2018.
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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: universe - galaxies
Publications with words: universe - galaxies
See also:
- APOD: 2025 March 2 B The Hubble Ultra Deep Field in Light and Sound
- APOD: 2024 December 31 B The Twisted Disk of NGC 4753
- APOD: 2024 December 18 B NGC 660: Polar Ring Galaxy
- APOD: 2024 December 1 B Cosmic Latte: The Average Color of the Universe
- APOD: 2024 October 20 B Dark Matter in a Simulated Universe
- Stellar Streams in the Local Universe
- APOD: 2024 July 1 B Time Spiral