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©E. Sandquist (SDSU) 		Left: A computer simulation of common envelope evolution in which the two stars, in this case a giant and a main sequence star, are initially separated by ~1 AU and evolve (in just under 1 year) until they are almost touching. Note how the common envelope is ejected at the end of the process. Bottom: A movie of the same process.



©E. Sandquist (SDSU)