704 - Space: Black Holes Singin'

Effects of Vacuum of Space on Humans
http://sitn.hms.harvard.edu/flash/2013/space-human-body/
https://www.iflscience.com/space/what-would-happen-your-body-space-without-spacesuit/
https://www.businessinsider.com/how-long-human-survive-outer-space-without-spacesuit-2017-5

Dark Side of the Moon
https://en.wikipedia.org/wiki/Far_side_of_the_Moon
https://en.wikipedia.org/wiki/Tidal_locking
https://en.wikipedia.org/wiki/Lunar_mare

The Great Wall from Space
https://www.thevintagenews.com/2017/02/12/the-myth-that-the-great-wall-of-china-is-visible-from-space-originated-before-anyone-had-ever-been-into-space/
https://www.nasa.gov/vision/space/workinginspace/great_wall.html

Black Holes are in the key of B Flat
https://science.nasa.gov/science-news/science-at-nasa/2003/09sep_blackholesounds
https://www.nasa.gov/centers/goddard/universe/black_hole_sound.html

Luxor in Vegas
https://www.reviewjournal.com/life/luxor-light-serves-as-beacon-for-millions-of-las-vegas-strip-visitors/
https://gamboool.com/luxor-light-can-you-see-the-luxor-sky-beam-from-space-and-what-is-the-light-bill-on-that-thing