<p><a href="/Phocea/file.php?reload=1261131462&class=newsImg&file=_90_0_.jpg"><img style="border: 0; margin: 0 8px 5px 0;" src="/Phocea/file.php?reload=1261131462&class=newsImg&file=_90_0_.jpg" alt="img" width="180" align="left" /></a>This HERSCHEL image of the Rosette nebula shows impressively how molecular gas is heated by ultraviolet radiation from a near-by star cluster (located in the right, out of the picture).</p>
<p>It is a three color composite of the wavelengths at 70 micron (blue), 160 micron (green), and 250 micron (red), observed with the instruments PACS and SPIRE).</p>
<p>Each color represents a different temperature of the gas and one observed a strong gradient (from hot (right) to cold (leff) gas) into the molecular cloud, which is wrapped around a central cavity. Small pillars point towards the center of the cluster, indicating new star formation in this massive cloud in a distance of around 5000 light-years.</p>
<p>Crédits: ESA, the PACS and SPIRE consortium and the HOBYS key programme consortia. Not authorised for reproduction.</p> http://herschel.esac.esa.int/SDP_wkshops ...
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