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Maps from the European Space Agency’s Planck satellite reveal the cosmos in a range of microwave and infrared frequencies. Planck’s primary mission was to precisely measure the cosmic microwave background, or CMB, cheap retro jordans , which is 13.8-billion-year-old radiation that allows astronomers to probe the universe’s first moments (SN: 12/28/13, p. 21). The CMB appears as speckles; blue regions are slightly colder than the average CMB temperature of 2.7 kelvins, while orange ones are warmer. To study these tiny fluctuations, cheap jordan shoes , scientists must filter out galactic radiation emitted by speedy electrons (red at lower frequencies) and dust grains (red and white at higher frequencies). “From the standpoint of the CMB, all this foreground stuff is like bugs on a windshield, cheap real jordans ,” says Planck project scientist Charles Lawrence. “But entomology is an interesting subject.” Magazine In the Jan. 21 SN: Supercontinent superpuzzle, cheap jordans , seeking better batteries, cheap jordans for sale , real nausea in virtual reality, reversing premature aging, pitcher plant ambush, cheap wholesale jordans , quantum weirdness confirmed and more. Current Issue PLANETARY PROTECTION Earth’s magnetic field deflects charged solar particles toward the planet’s poles, generating auroras. This photo was taken from (and shows parts of) the International Space Station. EMail Google+ Above: NASA; Below, cheap jordans free shipping , from top: NASA, JHUAPL, Carnegie Inst. for Science; JPL-Caltech/NASA; NASA; JPL-Caltech/NASA A powerful global magnetic field envelops Earth in a cozy blanket of protection against bursts of solar particles (see " The magnetic mystery at the center of the Earth "). But the solar system’s other rocky worlds aren’t so lucky. Mercury: Paltry The most petite planet has an appropriately puny magnetic field, cheap Authentic jordans , just 1.1 percent as strong as Earth’s ( SN Online: 5/7/15 ). This article is available only to subscribing members. | 202.785.2255 | http://users.atw.hu/fi...rum_topic&topic=10326 http://www.knorretty.c...thread.php?thread_id=4533 http://users.atw.hu/cn...rum_topic&topic=12300 |