Science
Related: About this forumThe 6,000-Year-Old Telescope
Telescopes as we know them today trace their origins back to the Enlightenment. The earliest such devices emerged about 400 years ago. But humankind has fashioned environments for stargazing for far longer than that.
Scholars have long speculated about the astronomical orientation of the Pyramids at Giza, for instance, and the possibility that Stonehenge was built to be a celestial observatory.
Now, theres evidence of ancient telescopic structures that date back even farther, to about 6,000 years ago. Astronomers are exploring ancient tombs in Portugal that they believe may have been used by prehistoric humans to enhance specific views of the night skies. Researchers are focusing on the alignment of the stars with megalithic tombsstone structures known as dolmens that feature long narrow entrances that act as apertures, essentially zooming in on stars and planets that wouldnt always be visible from the outside. These structures could therefore have been the first astronomical tools to support the watching of the skies, millennia before telescopes were invented, the Royal Astronomical Society wrote in an statement announcing the research on Wednesday.
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http://www.theatlantic.com/technology/archive/2016/06/oldest-telescope/489362/
elljay
(1,178 posts)Different type of device, but still impressive at that time.
https://en.m.wikipedia.org/wiki/Camera_obscura
malthaussen
(17,195 posts)Not sure why they use it, since the plain facts are interesting enough.
-- Mal
Bernardo de La Paz
(49,001 posts)Spitfire of ATJ
(32,723 posts)left-of-center2012
(34,195 posts)Which had a lot to do with my 'conversion' to Buddhism 21 years ago.
Spitfire of ATJ
(32,723 posts)tanyev
(42,556 posts)Nitram
(22,801 posts)Like the far more sophisticated ancient Indian Jantar Mantar observatory in Jaipur.
https://cpdarshi.wordpress.com/2011/10/14/ancient-indian-astronomy/