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Stargazers are flocking to AZ’s 22 Dark Sky Places — and putting astrotourism on the map
Arizona’s dark sky cities are turning the state into a top astrotourism destination. Valley 101 explores why visitors prefer ...
The Week6d
For 100 years we have marvelled at planetariums. Here's a brief history of how humans brought the stars indoors
But this is a performance; the stars above an ingenious projection ... of sheet metal perforated with a star map. When viewed from the inside, the light shining through 692 pinholes replicated the ...