<a class="link" rel="nofollow" href="http://www.FreeScienceLectures.com">http://www.FreeScienceLectures.com</a> <br />Sagan was central to the discovery of the high surface temperatures of the planet Venus. <br /><br />In the early 1960s, no one knew for certain the basic conditions of Venus' surface and Sagan listed the possibilities in a report later depicted for popularization in a Time-Life book, Planets - his own view was that the planet was dry and very hot, as opposed to the balmy paradise others had imagined. <br /><br />He had investigated radio emissions from Venus and concluded that there was a surface temperature of 500 �C (900 �F). As a visiting scientist to NASA's Jet Propulsion Laboratory, he contributed to the first Mariner missions to Venus, working on the design and management of the project. Mariner 2 confirmed his views on the conditions of Venus in 1962. <br /><br />This video shows an interview with him before the first missions to Venus in 1960 or 1961. <br /><br />--- <br />It's Never too Late to Study: <br /><a class="link" rel="nofollow" href="http://www.FreeScienceLectures.coma>">http://www.FreeScienceLectures.coma></a> />--- <br />Notice: This video is copyright by its respectful owners. <br />The website address on the video does not mean anything. <br />---
