Spherical Earth (Cartography 🗺️)

Spherical Earth or Earth's curvature refers to the approximation of the figure of the Earth as a sphere. The earliest documented mention of the concept dates from around the 5th century BC, when it appears in the writings of Greek philosophers. In the 3rd century BC, Hellenistic astronomy established the roughly spherical shape of Earth as a...

https://en.wikipedia.org/wiki/Spherical_Earth

#SphericalEarth #Earth #Geodesy #Spheres #Cartography #AncientAstronomy

Ancient Arabic Texts Record Observations of Supernovae in 1006 and 1181

A recent study highlights Arabic historical texts that describe two significant supernovae events visible from Earth in 1006 and 1181 AD. These supernovae were notable celestial phenomena, recorded not only by Far Eastern observers but also Arab astronomers, who documented the changes in constellati... [More info]

12,000 years ago, people at Göbekli Tepe may have carved what is now believed to be the oldest solar calendar ever discovered.
Symbols on pillars — especially lots of “V” marks — might represent days, with special markings for the summer solstice.
If correct, this is a striking example of early humans observing the skies, measuring time, and encoding it in stone — long before writing as we know it.

#archaeology #AncientAstronomy #gobeklitepe

https://www.popularmechanics.com/science/archaeology/a68034951/humanity-oldest-calendar-ever-discovered/

This Mysterious ‘Wall Device’ Can Calculate Everything? Jantar Mantar Part 2
Watch full video : https://youtu.be/OaYVWRIfmts

#PraveenMohan #astronomy #ancienttechnology #ancientdevice #observatory #ancientastronomy #spacetechnology #India #AncientIndia #JantarMantar

The Surprising Origin of Telescope
A strange device called the 'Dhruva Darshak Yantra' is found in an astronomical observatory called Jantar Mantar. Is it possible that this is the world's first telescope?
Watch full video : https://youtu.be/YLCz8_yA-T8

#praveenmohan #astronomy #ancienttechnology #jantarmantar #ancientknowledge #ancientastronomy #northstar #polaris #telescope

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Archaeologists have discovered a 2,400-year-old stone map of the night sky in Italy. The map shows 29 stars carved on a circular stone, including Orion, Scorpius and Pleiades. The map is very accurate, except for one mysterious star that might have been a supernova or a black hole. 🌠🌠🌠

#starmap #ancientastronomy #supernova

https://www.msn.com/en-us/news/technology/2400-year-old-map-found-in-italy-accurately-depicts-night-sky-and-a-mysterious-star/ar-AA1m7vO3