13-12-10 A massive ejection of material from the sun initially traveling at over 7 million miles per hour that narrowly missed Earth last year is an event solar scientists hope will open the eyes of policymakers regarding the impacts and mitigation(减轻,缓...
13-09-06 Data from NASA's Interstellar Boundary Explorer (IBEX) spacecraft reveal that neutral interstellar atoms are flowing into the solar system from a different direction than previously observed. Interstellar atoms flow past Earth as the solar system pa...
13-08-05 Researchers at the University of Basel have successfully replaced the rare element iodine(碘) in copper-based dye-sensitized solar cells by the more abundant element cobalt(钴) , taking a step forward in the development of environmentally friend...
13-07-22 The European Space Agency/NASA Solar and Heliospheric Observatory, or SOHO, captured this image of a gigantic coronal hole hovering over the sun's north pole on July 18, 2013, at 9:06 a.m. EDT. Coronal holes are dark, low density regions of the sun'...
13-06-27 Most efforts at improving solar cells have focused on increasing the efficiency of their energy conversion, or on lowering the cost of manufacturing. But now MIT researchers are opening another avenue for improvement, aiming to produce the thinnest...
13-06-24 On June 20, 2013, at 11:24 p.m., the sun erupted with an Earth-directed coronal(冠状的) mass ejection or CME, a solar phenomenon that can send billions of tons of particles into space that can reach Earth one to three days later. These particles c...
13-06-20 Using data gathered by NASA's Lunar Reconnaissance Orbiter (LRO) mission, scientists believe they have solved a mystery from one of the solar system's coldest regions -- a permanently shadowed crater on the moon. They have explained how energetic pa...
13-06-06 If you had a time machine that could take you anywhere in the past, what time would you choose? Most people would probably pick the era of the dinosaurs in hopes of spotting a T. rex. But many astronomers would choose the period, four and a half bil...
13-04-27 A University of Washington astronomer is using Earth's interstellar(星际的) neighbors to learn the nature of certain stars too far away to be directly measured or observed, and the planets they may host. Characterization by proxy is the technique...
13-03-27 Solar cells are just like leaves, capturing the sunlight and turning it into energy. It's fitting that they can now be made partially from trees. Georgia Institute of Technology and Purdue University researchers have developed efficient solar cells...