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March 30, 2018 01:00 pm
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/WQ1q5z4dTJ4/an-up-close-look-at-the-parker-solar-probe----the-spacecraft-that-will-skim-the-suns-surfa
An Up-Close Look At the Parker Solar Probe -- the Spacecraft That Will Skim the Sun's Surface
schwit1 shares a report from Ars Technica, offering an up-close look at the Parker Solar Probe: This summer, NASA will launch the Parker Solar Probe, an impressively heat-resistant spacecraft destined to glide closer to the surface of the Sun than any spacecraft before it. It will fly within about 6 million kilometers of the searing surface, more than seven times closer than earlier craft. If all goes to plan, the craft will be hurtling at 724,205 km per hour and have its one-of-a-kind heat shield perfectly facing the surface as it makes those closest approaches. In about seven years, it will complete 24 orbits around the Sun and pass by Venus seven times. All the while, the Parker probe will collect a constellation of data to help answer scientists' burning questions -- and solve some sizzling mysteries -- about the orb of hot plasma that lights up our Solar System. Namely, it will try to help us finally understand why the Sun's atmosphere is 300 times hotter than its surface, which itself is a balmy 5,727C. This fact defies basic physics and to this day is unexplained. One of the leading hypotheses to account for the heat shift comes from famed physicist Eugene Parker, after whom the probe is named. In the mid-1950s, Parker theorized that the Sun's super-heated corona could be explained by a complex system of plasma, magnetic fields, and energetic particles that spark solar explosions called "nanoflares." Scientists are thirsty for close-up data on those potential explosions as well as the cascade of energy called solar wind. With that data, they can put their hypotheses to the test. And in addition to helping us understand coronal heat, data on these sunny phenomena could help clear up poorly understood space weather, which can wreak havoc on satellites and power lines here on Earth.Read more of this story at Slashdot.
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/WQ1q5z4dTJ4/an-up-close-look-at-the-parker-solar-probe----the-spacecraft-that-will-skim-the-suns-surfa
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