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Power systems: Weak power grid fluctuations can occur. Other systems: HF radio propagation can fade at higher latitudes, and aurora has been seen as low as New York and Idaho (typically 55° geomagnetic lat.). Spacecraft operations: Corrective actions to orientation may be required by ground control possible changes in drag affect orbit predictions. Power systems: High-latitude power systems may experience voltage alarms, long-duration storms may cause transformer damage.
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Other systems: Intermittent satellite navigation and low-frequency radio navigation problems may occur, HF radio may be intermittent, and aurora has been seen as low as Illinois and Oregon (typically 50° geomagnetic lat.). Spacecraft operations: Surface charging may occur on satellite components, drag may increase on low-Earth-orbit satellites, and corrections may be needed for orientation problems. Power systems: Voltage corrections may be required, false alarms triggered on some protection devices. Other systems: Induced pipeline currents affect preventive measures, HF radio propagation sporadic, satellite navigation degraded for hours, low-frequency radio navigation disrupted, and aurora has been seen as low as Alabama and northern California (typically 45° geomagnetic lat.). Spacecraft operations: May experience surface charging and tracking problems, corrections may be needed for orientation problems. Power systems: Possible widespread voltage control problems and some protective systems will mistakenly trip out key assets from the grid. Other systems: Pipeline currents can reach hundreds of amps, HF (high frequency) radio propagation may be impossible in many areas for one to two days, satellite navigation may be degraded for days, low-frequency radio navigation can be out for hours, and aurora has been seen as low as Florida and southern Texas (typically 40° geomagnetic lat.). Spacecraft operations: May experience extensive surface charging, problems with orientation, uplink/downlink and tracking satellites. Unlike the Hubble Space Telescope, which mostly observes light in the visible part of the spectrum, Webb is optimized to study longer-wavelength infrared radiation, allowing it to capture light from the dawn of the universe that's been stretched out by the expansion of space itself over the past 13.8 billion years.Power systems: Widespread voltage control problems and protective system problems can occur, some grid systems may experience complete collapse or blackouts. Last month, NASA unveiled other spectacular "first light" pictures from the telescope, showcasing interacting galaxies, the death throes of a doomed star and a stellar nursery where massive young suns are being born, blazing with gale-force solar winds that sculpt vast clouds of gas and dust. This time, he assured users, the photo was real. He was shortly back on surer ground posting on Twitter an image of the famous Cartwheel Galaxy taken by the James Webb Space Telescope. "I come to present my apologies to those who may have been shocked by my prank, which had nothing original about it," he said, describing the post as a "scientist's joke." On Wednesday, he said sorry to those who were misled. However, at a time when battling fake news is of paramount importance for the scientific community, many Twitter users indicated they were unamused by Klein, director of research at France's Atomic Energy Commission and a radio show producer. Klein - who has more than 91,000 followers on Twitter - acknowledged that many users had not understood his joke which he said was simply aimed at encouraging us "to be wary of arguments from people in positions of authority as well as the spontaneous eloquence of certain images." "According to contemporary cosmology, no object belonging to Spanish charcuterie exists anywhere but on Earth," he said.
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A new world is revealed every day," he gushed.īut in fact, as Klein later revealed, the picture was not of the intriguing star just over four light-years from the Sun but a far more modest slice of the lip-sizzling Spanish sausage chorizo.
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Photo de Proxima du Centaure, l’étoile la plus proche du Soleil, située à 4,2 année-lumière de nous.Ĭe niveau de détails… Un nouveau monde se dévoile jour après jour.