Since the moon is tidally locked to the Earth, for millennia we could only guess what mysteries lay on its “dark side.” Then in 1959 the Luna 3 spacecraft sent back a photo that prompted more questions than it answered.
Host: Caitlin Hofmeister
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Sources:
https://www.sciencefocus.com/space/what-is-tidal-locking/
https://nssdc.gsfc.nasa.gov/imgcat/html/object_page/lu3_1.html
https://www.popsci.com/when-we-first-saw-farside-moon#page-5
https://svs.gsfc.nasa.gov/4109
https://sservi.nasa.gov/articles/far-side-of-the-moon-explained/
https://www.nasa.gov/mission_pages/LRO/multimedia/lroimages/lola-20100409-aitken.html
http://geology.isu.edu/wapi/Geo_Pgt/Mod09_Mars/mars.htm
http://pluto.jhuapl.edu/Multimedia/index.php
https://www.lpi.usra.edu/meetings/lpsc97/pdf/1787.PDF
https://www.scientificamerican.com/article/how-the-man-in-the-moon-got-his-enormous-right-eye/
http://sci.esa.int/smart-1/39791-lunar-far-side-highlands/
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Images:
https://images.nasa.gov/details-GSFC_20171208_Archive_e001861.html
https://svs.gsfc.nasa.gov/12739
https://svs.gsfc.nasa.gov/4537
https://en.wikipedia.org/wiki/File:Lunik_3.jpg
https://www.istockphoto.com/photo/monument-to-the-conquerors-of-space-moscow-russia-gm509258357-45613110
https://commons.wikimedia.org/wiki/File:Luna_3_moon.jpg
https://svs.gsfc.nasa.gov/4109
https://www.jpl.nasa.gov/spaceimages/details.php?id=PIA16589
https://commons.wikimedia.org/wiki/File:Moon_back-view_(Clementine,_cropped).png
https://spacetelescope.org/images/opo0124a/
https://images.nasa.gov/details-PIA19952.html
https://images.nasa.gov/details-PIA07766.html
https://commons.wikimedia.org/wiki/File:Return_of_the_moon_diagram.svg
https://svs.gsfc.nasa.gov/10930
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