From: utzoo!decvax!duke!harpo!gdw
Newsgroups: net.space
Title: Re: re:supernovae & gravity waves - (nf)
Article-I.D.: harpo.928
Posted: Fri Aug  6 16:32:01 1982
Received: Mon Aug  9 06:32:32 1982


#R:utzoo:-233800:harpo:11700001:000:290
harpo!gdw    Aug  6 16:21:00 1982

I thought that distances were measured using "red shift", viz.
the Doppler shift (toward longer wavelengths) of it's spectrum
due to it's velocity away from Earth caused by the expanding
universe. This velocity times the Hubble constant equals the
distance of the star with good accuracy.