Boer Deng writes for Nature about NASA’s Soil Moisture Active Passive (SMAP) probe, which uses microwave measurements to plot moisture levels in the Earth’s soil. “With SMAP, we are trying quite a different model,” says Prof. Dara Entekhabi, who is leading the SMAP science team.
Henry Hanks of CNN writes that MIT researchers have found that a protective field around Earth blocks high-energy electrons. “The phenomenon challenges existing theories that these electrons drift into the upper atmosphere and are destroyed by air molecules,” writes Hanks.
Researchers at the MIT Haystack Observatory have discovered that a phenomenon called “plasmaspheric hiss” prevents radiation from reaching Earth, reports Flora Graham for New Scientist. Graham explains that the plasmaspheric hiss is comprised of “very low-frequency electromagnetic waves,” which act like a radiation barrier.
Researchers from MIT have detected the brightest pulsar ever recorded, reports Brook Hays of UPI. “Despite its small dimensions and modest mass, the pulsating dead star is burning with the energy of 10 million suns,” writes Hays.
A team of MIT researchers has developed an algorithm that will help NASA crews clean up debris in space, reports Nick Stockton for Wired. The research will allow crews to clear pieces of satellites spinning so wildly that they would typically be dangerous to collect.
Tom Ashbrook of NPR’s On Point interviews Professor Kerri Cahoy as a part of a segment on the aging U.S. weather satellite fleet. Cahoy suggests that the U.S. could shift to a more widely distributed network of smaller, cheaper versions of the currently used satellites.