How Wiretapping Helped Transform Astronomy

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Early telegraph operators and WWI spies picked up some weird noises on radio waves. As it turned out, they were actually listening to plasma waves in Earth’s magnetic field lines!

Hosted by: Caitlin Hofmeister

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Sources:

https://science.nasa.gov/science-news/science-at-nasa/2001/ast19jan_1/

https://plasmasphere.nasa.gov/discovery.html
https://nationalmaglab.org/education/magnet-academy/watch-play/interactive/barkhausen-effect
https://royalsocietypublishing.org/doi/abs/10.1098/rsta.1953.0011
https://www.scientificamerican.com/article/whistlers/

https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/GL006i006p00511
https://science.sciencemag.org/content/212/4491/235/tab-pdf
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2006GL027019
https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/JA095iA12p20967

http://vanallenprobes.jhuapl.edu/Spacecraft/index.php#EMFISIS
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/grl.50627
https://science.sciencemag.org/content/340/6129/186

Images:

https://en.wikipedia.org/wiki/File:EE8_field_telephone_in_use.jpg
https://en.wikipedia.org/wiki/File:Whistler_radio_palmer_2004-07-23_T035528.png
https://www.nasa.gov/feature/goddard/2017/nasa-listens-in-as-electrons-whistle-while-they-work
https://www.nasa.gov/mission_pages/sunearth/news/gallery/20130228-radiationbelts.html
https://www.nasa.gov/mission_pages/sunearth/news/gallery/rbsp-belts.html
https://www.jpl.nasa.gov/video/details.php?id=1250
https://solarsystem.nasa.gov/missions/cassini/mission/grand-finale/overview/
https://photojournal.jpl.nasa.gov/catalog/PIA04433
https://solarsystem.nasa.gov/resources/10722/saturn-plasma-and-radio-waves-as-seen-by-cassini/