There are four: Hubble Space Telescope, Compton Gamma Ray Observatory, Chandra X-ray Observatory, and the Spitzer Space Telescope.
Yes, there are many observatories all around Europe.
Observatories
I take that you are asking 'astronomical observatories'. 'Observatory' is a noun, observatories is the plural form. Astronomical is simple a modifier (adjective, in this case.)
Siegfried Marx has written: 'Sternwarten der Welt' -- subject(s): Astronomical observatories 'Observatories of the world' -- subject(s): Astronomical observatories
The Mercury program
Alt-azimuth is the mount ussually found in professional observatories.
Short answer: No. Long answer: No it was not.
Apollo 11
yes
observetories
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alan shephard