The ground and space-based telescopes and instruments used to observe the universe beyond Earth. They are grouped here by observing platform and wavelength regime into space-based observatories, ground-based radio and millimeter observatories, and ground-based optical observatories.
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1. Wikipedia: History of the telescope
Wikimedia FoundationHistory of the telescope, lead sectionQuote, History of the telescope, lead section
The history of the telescope can be traced to before the invention of the earliest known telescope, which appeared in 1608 in the Netherlands, when a patent was submitted by Hans Lippershey, an eyeglass maker.
Encyclopedia Britannica: Space Exploration
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