In which city was the world's first planetarium projector installed in 1923?
Correct answer: Deutsches Museum, Munich, Germany
sunbeem
the first one of these I saw was at Griffith Park in LA. I was about 10 years old and thought it was amazing and wanted to know the details on how it worked. I hope it or an updated version is still there and working.
Maddog
Funny thing I've actually been there when I was stationed in the Army back in 1975
little b
I'm not good at maths😈