Herschel Science Centre at ESA
http://herschel.esac.esa.int/home.shtml
ESA Science & Technology: Herschel
http://sci.esa.int/science-e/www/area/index.cfm?fareaid=16
PACS - A Photodetector Array Camera and Spectrometer for Herschel
http://pacs.mpe.mpg.de/
SPIRE - Spectral and Photometric Imaging Receiver
http://www.astro.cf.ac.uk/research/instr/projects/?page=spire
HIFI homepage
http://www.sron.nl/divisions/lea/hifi/
European Space Agency (ESA) Main Website
http://www.esa.int
Max Planck Institute for Extraterrestrial Physics (MPE)
http://www.mpe.mpg.de
NASA - Herschel Science Center
http://www.herschel.caltech.edu/
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