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Carl Sagan is an absolute legend and a hero, and his book Contact and the movie it's based on is phenomenal. HOWEVER... we examined the central conceit of the story - that aliens pick up our radio signals and return a message with instructions to build a machine - and look at the stars inside the 100 light-year bubble around Earth where our radio waves have traveled. And the potential of this happening... Well, it isn't good.
Sorry Carl.
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LINKS LINKS LINKS
The Contact opening scene: https://youtu.be/3LcR_B3t7B0
https://www.sciencemag.org/news/2021/01/how-famed-arecibo-telescope-fell-and-how-it-might-rise-again
https://www.naic.edu/ao/blog/hunting-mysterious-origins-fast-radio-bursts
https://www.seti.org/seti-institute/project/details/arecibo-message
https://imagine.gsfc.nasa.gov/ask_astro/stars.html
https://skyandtelescope.org/astronomy-blogs/how-many-stars-night-sky-09172014/
https://www.space.com/23772-red-dwarf-stars.html
https://www.nasa.gov/mission_pages/chandra/images/assessing-the-habitability-of-planets-around-old-red-dwarfs.html
https://voyager.jpl.nasa.gov/mission/status/
https://arxiv.org/abs/2010.14812
https://exoplanets.nasa.gov/search-for-life/can-we-find-life/
https://www.nature.com/articles/s41586-021-03596-y.epdf
https://earthsky.org/space/study-2034-stars-in-earth-transit-zone/
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