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The star factory: observing Arp 220

Using the Herschel Space Observatory, Wilson's group has found Arp 220 to have large amounts of very warm molecular hydrogen gas, a surprising find that implies molecular hydrogen is the dominant coolant in the high-temperature gas. Wilson's team has also observed a massive wind from the center of the galaxy, removing molecular gas from the central star forming core....

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Source: PhysOrg - Saturday, 18 February

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