The German Long Wavelength Consortium (GLOW) was formed in 2006 by German universities and research institutes to foster the use of the radio spectral window at meter wavelengths for astrophysical research. This new window to the universe offers unprecedented insights into many astrophysical processes, which cannot be observed elsewhere. German researchers study for instance the evolution of galaxy clusters, magnetic fields in the intergalactic medium, the nature and evolution of pulsars, and solar outbursts. The GLOW consortium coordinates the German participation in the Low Frequency Array (LOFAR).