<a class="link" rel="nofollow" href="http://www.FreeScienceLectures.com">http://www.FreeScienceLectures.com</a> 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
