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Space Telescope Spots 'Invisible' Galaxies Sunday, November 07, 2010 - Anuradha Menon Home >> Headlines >> Space   
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Five distant galaxies so choked with dust that they are completely invisible at optical wavelengths have been spotted at submillimetre wavelengths by the European Space Agency's Herschel telescope. Because the dust is generated by young stars, such galaxies could open a new window on the universe's most active star-formation period. Observations of the galaxies' spectra suggest they are very distant, appearing as they were when the universe was just 2 to 4 billion years old. (source: newscientist.com)
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