Herschel Space Observatory to lift off on 14 May
Sunday, May 10, 2009 - 01:35
in Astronomy & Space
The evolution of galaxies in the early Universe is increasingly studied in the infrared. In the near-infrared, scientists observe the redshifted light from stars in these galaxies, and in the far-infrared and submillimetre range, the light which has been swallowed by dust and then re-emitted. Many galaxies even emit up to 90 percent of their luminosity in the far-infrared. PACS operates at far-infrared wavelengths of up to 210 micrometres...