Antarctic Icebergs Help Ocean Take Up Carbon Dioxide The first comprehensive study of the biological effects of Antarctic icebergs shows that they fertilize the Southern Ocean, enhancing the growth of algae that take up carbon dioxide from the atmosphere and then, through marine food chains, transfer carbon into the deep sea. This process is detailed [...]
Mars Express Sees Deep Fractures on Mars Newly released images from the European Space Agency’s Mars Express show Nili Fossae, a system of deep fractures around the giant Isidis impact basin. Some of these incisions into the martian crust are up to 500 m deep and probably formed at the same time as the basin. [...]
Spitzer Detects Shadow of ‘Super-Earth’ in Front of Nearby Star NASA’s Spitzer Space Telescope has detected the crossing of a solid planet in front of a star located at only 42 light-years in the constellation Cancer. Thanks to this detection, astronomers know that this “super-Earth” measures 2.1 times the size of our Earth. This is [...]
Gravity Probe B Confirms Two Einstein Space-Time Theories NASA’s Gravity Probe B (GP-B) mission has confirmed two key predictions derived from Albert Einstein’s general theory of relativity, which the spacecraft was designed to test. The experiment, launched in 2004, used four ultra-precise gyroscopes to measure the hypothesized geodetic effect, the warping of space and time [...]
Universal Signaling Pathway Found to Regulate Sleep Sleeping worms have much to teach people, a notion famously applied by the children’s show “Sesame Street,” in which Oscar the Grouch often reads bedtime stories to his pet worm Slimy. Based on research with their own worms, a team of neurobiologists at Brown University and several other [...]
New Tools to Tackle a Solar Data Storm So great is the wealth of data about the Sun now being sent back by space missions such as SOHO, STEREO and the Solar Dynamics Observatory (SDO) that scientists back on Earth can struggle to keep pace. To combat this data overload, scientists from the Visual Computer [...]
Global Warming Won’t Harm Wind Energy Production The production of wind energy in the U.S. over the next 30-50 years will be largely unaffected by upward changes in global temperature, say a pair of Indiana University Bloomington scientists who analyzed output from several regional climate models to assess future wind patterns in America’s lower 48 [...]
Measuring the Distant Universe in 3-D Using Light from 14,000 Quasars The biggest 3-D map of the distant universe ever made, using light from 14,000 quasars — supermassive black holes at the centers of galaxies billions of light years away — has been constructed by scientists with the third Sloan Digital Sky Survey (SDSS-III). The [...]
Saving the Asiatic Wild Ass in the Mongolian Gobi Considerable attention is currently being paid to the conservation of migratory birds, as such species may face threats not only in their breeding and wintering areas but also en route between them. But many mammals are also migratory and because most of them are unable to [...]
Physicists Create Quantum Twin Atoms Objects that are well separated in space but still cannot be understood separately belong to the profoundest mysteries of quantum physics. Pairs of photons are prominent examples of such systems. They allow the teleportation of quantum states or tap-proof data transfer using quantum cryptography. In future, such experiments will not [...]
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