sábado, 13 de enero de 2018

Why NASA Is Exploring The Edge Of Our Planet





Why NASA Is Exploring The Edge Of Our Planet


The Global-scale Observations of the Limb and Disk, or GOLD, instrument launches aboard a commercial communications satellite in January 2018 to provide the most comprehensive observations of the ionosphere we’ve ever had. Above the ozone layer, the ionosphere is a part of Earth’s atmosphere where particles have been cooked into a sea of electrically-charged electrons and ions by the Sun’s radiation. The ionosphere is co-mingled with the very highest — and quite thin — layers of Earth’s neutral upper atmosphere, making this region an area that is constantly in flux undergoing the push-and-pull between Earth’s conditions and those in space. Increasingly, these layers of near-Earth space are part of the human domain, as it’s home not only to astronauts, but to radio signals used to guide airplanes and ships, and satellites that provide our communications and GPS systems. Understanding the fundamental processes that govern our upper atmosphere and ionosphere is crucial to improve situational awareness that helps protect astronauts, spacecraft and humans on the ground. This video is public domain and along with other supporting visualizations can be downloaded from the Scientific Visualization Studio at: http://svs.gsfc.nasa.gov/12817Credit: NASA’s Goddard Space Flight Center/Joy Ng Music credits: ‘Faint Glimmer’ by Andrew John Skeet [PRS], Andrew Michael Britton [PRS], David Stephen Goldsmith [PRS], ‘Ocean Spirals’ by Andrew John Skeet [PRS], Andrew Michael Britton [PRS], David Stephen Goldsmith [PRS] from Killer Tracks. If you liked this video, subscribe to the NASA Goddard YouTube channel: http://www.youtube.com/NASAExplorer Follow NASA’s Goddard Space Flight Center · Facebook: http://www.facebook.com/NASA.GSFC · Twitter http://twitter.com/NASAGoddard · Flickr http://www.flickr.com/photos/gsfc/ · Instagram http://www.instagram.com/nasagoddard/ · Google+ https://plus.google.com/+NASAGoddard/posts

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