Word: elmegreen
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...hydrogen molecules in a cloud sufficiently close to one another that they are held together by their mutual gravity. As a result, a huge pocket of condensed gas, trillions of miles across, is formed at the edge of the larger cloud. In a model proposed by Astronomers Bruce Elmegreen and Charles Lada of the Harvard-Smithsonian Center for Astrophysics, shock waves from the ignition of earlier massive stars help create the conditions for the birth of other stars from the same cloud...
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