Ten probes from the Venera series successfully landed on Venus and transmitted data from the surface, including the two, Vega program and Venera-Halley probes. In addition, thirteen Venera probes successfully transmitted data from the atmosphere of Venus ( Read more... )

Another Important Idea That Everyone Should Know About ( Read more... )

John Baez on cartesian closed categories, Church integers, and "holodeck games ( Read more... )