Calculations Show Mercury Has a Thin but Dense Crust
Mercury is the closest planet to the Sun, and very little is really known about this hot rocky orb. So far, only two space probes have ever studied Mercury. NASA’s Mariner 10 flew past the planet three times between 1973 and 1974. The flybys allowed scientists to map about half the planet, discover its thin […]
Space Junk Jeopardizes Earth’s Space Environment
Scientists estimate that there are some 750,000 pieces of space junk circling Earth, millions more if you count fragments smaller than 1 centimeter. Think about it: Mankind has sent thousands of rockets into space since the launch of the first satellite, Sputnik 1, in 1957. While a number of space vehicles are still in active […]
The Day Geoscience Saved the World From Possible Armageddon
In the late 1960s, U.S. military action that would likely have led to nuclear Armageddon was averted, thanks to wary officers who looked for explanations other than Soviet aggression when warning systems suggested otherwise. A new study by three retired U.S. Air Force officers and researchers at the University of Colorado, Boulder, details the events […]