Journal of the Amateur Astronomers Association of New York June 2012 Venus: Past, Present and Future By Sandra Wayne magine a world covered in a perpetual fog of sulfuric acid rain, where the average temperature is 457°C (855°F). ... Theories have been devel oped t o explain dark matter to include dark stars and black holes and neutrinos. ... Models predicted 0.9-2.2 pounds of dark matter in a volume the size of Earth in the Sun's region, but new findings suggest 0.15 pounds at most. ...