Abstract
The SciencesVolume 21, Issue 8 p. 10-14 The Great Redshift Debate Are quasars as distant as the edge of the universe, or as near as most ordinary stars? David Helfand, David Helfand David Helfand is in the department of astronomy and astrophysics at Columbia University. During the past four years, he has participated in the Einstein Observatory Satellite Program, studying X-ray emission from a variety of celestial sources.Search for more papers by this author David Helfand, David Helfand David Helfand is in the department of astronomy and astrophysics at Columbia University. During the past four years, he has participated in the Einstein Observatory Satellite Program, studying X-ray emission from a variety of celestial sources.Search for more papers by this author First published: October 1981 https://doi.org/10.1002/j.2326-1951.1981.tb01999.x AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Volume21, Issue8October 1981Pages 10-14 RelatedInformation
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