Kavli Affiliate: Peter F. Michelson | First 5 Authors: Peter F. Michelson, Robert L. Byer, Sasha Buchman, Ilya Mandel, John Lipa | Summary: We make the case for the early development of a Mid-Frequency-Band (MFB) gravitational wave (GW) observatory in geosynchronous orbit (73,000 km arm), optimized for the frequency band 10 mHz to 1 Hz. […]