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Galaxy formation

Galaxy formation

R590/0124

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Credit

MASAO MORI / MASAYUKI UMEMURA / SCIENCE PHOTO LIBRARY MASAO MORI / MASAYUKI UMEMURA / SCIENCE PHOTO LIBRARY

Caption

Galaxy formation. Image 2 of 3. Supercomputer simulation modelling the growth of galaxies. This image shows the expansion of primordial gas 0.5 billion years after the start of the simulation. Colours represent increasing gas density from red, orange, yellow, green to blue as the most dense. The frame measures 326,000 light years across. Within the gas cloud are clusters of new stars (unseen) which eventually die and explode as supernovae. The explosions create heavy elements which enrich the gas and become recycled to repeat the process of new star formation. Previous calculations suggest that galaxy formation was a slow and gradual process lasting 10 billion years. The present model suggests it is much quicker, with most heavy elements created by 1 billion years. This simulation was performed in 2006 on the Earth Simulator supercomputer, Japan. For complete sequence, see images R590/123-R590/125.

Release details

Model release not required. Property release not required.

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