Galaxy formation

Galaxy formation

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This image is part of the feature Universe In A Box

Credit: MASAO MORI/MASAYUKI UMEMURA/SCIENCE PHOTO LIBRARY

Caption: Galaxy formation. Supercomputer simulation modelling the growth of galaxies as expansion of primordial gas. The image shows the gas 0.2 billion years after the start of the simulation. The frame measures 500,000 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.

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Keywords: artwork, astronomical, astronomy, astrophysical, astrophysics, bubble, bubbles, computer artwork, cooling, cosmology, evolution, galaxy formation, gas, gas cloud, gas dynamics, hydrodynamic, illustration, interstellar gas, lyman galaxy, physical, physics, primordial gas, science, space, star birth, star formation, starbirth, stellar formation, super bubble, supercomputer simulation

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