Research News SS 433, What Are You? + See all authors and affiliations Science 20 Jun 1980:Vol. 208, Issue 4450, pp. 1357-1360DOI: 10.1126/science.208.4450.1357 BEVERLY KARPLUS HARTLINEFind this author on Google Scholar Find this author on PubMed Search for this author on this site Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.