who said first time that earth is round ?

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who said first time that earth is round ?

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https://starchild.gsfc.nasa.gov/docs/StarChild/questions/question54.html

https://starchild.gsfc.nasa.gov/docs/StarChild/questions/question54.html
Who figured out the Earth is round? – NASA
Answer: It has actually been known that the Earth was round since the time of the ancient Greeks. I believe that it was Pythagoras who first proposed that the Earth was round sometime around 500 B.C. As I recall, he based his idea on the fact that he showed the Moon must be round by observing the shape of the terminator (the line between the …

https://www.scienceabc.com/eyeopeners/people-figure-earth-round-without-technology.html

https://www.scienceabc.com/eyeopeners/people-figure-earth-round-without-technology.html
How Early Did Humans Find Out The Earth Was Round? – Science ABC
19 oct. 2023It is said that Socrates, the legendary Greek philosopher, first popularized the idea that the Earth was round instead of flat. He observed a lunar eclipse and realized that the shadow on the moon due to the earth was curved, which prompted him to deduce that the earth must be round if it were to cast a curved shadow. Additionally, the shape of …

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

https://en.wikipedia.org / wiki / Spherical_Earth
Spherical Earth – Wikipedia
Image from space: The curved surface of the spherical planet Earth Medieval artistic representation of a spherical Earth – with compartments representing earth, air, and water (c. 1400). 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 …

https://bigthink.com/starts-with-a-bang/who-discovered-the-earth-is-round

https://bigthink.com/starts-with-a-bang/who-discovered-the-earth-is-round
Who Discovered The Earth is Round? – Big Think
One of the most enduring myths that children grow up with is the idea that Columbus was the only one of his time who believed that the Earth was round; everyone else believed it was flat. How …

https://www.independent.co.uk/life-style/history/ancient-greeks-proved-earth-round-eratosthenes-alexandria-syene-summer-solstice-a8131376.html

https://www.independent.co.uk/life-style/history/ancient-greeks-proved-earth-round-eratosthenes-alexandria-syene-summer-solstice-a8131376.html
How the ancient Greeks proved Earth was round over 2,000 years ago
Now, if the sun’s rays are coming in at the same angle at the same time of day, and a stick in Alexandria is casting a shadow while a stick in Syene is not, it must mean that the Earth’s surface …

https://www.aps.org/publications/apsnews/200606/history.cfm

https://www.aps.org/publications/apsnews/200606/history.cfm
This Month in Physics History – American Physical Society
June, ca. 240 B.C. Eratosthenes Measures the Earth. By around 500 B.C., most ancient Greeks believed that Earth was round, not flat. But they had no idea how big the planet is until about 240 B.C., when Eratosthenes devised a clever method of estimating its circumference. It was around 500 B.C. that Pythagoras proposed a spherical …

https://www.usatoday.com/story/news/factcheck/2022/11/17/fact-check-ample-evidence-earth-round-and-rotating/8267678001

https://www.usatoday.com/story/news/factcheck/2022/11/17/fact-check-ample-evidence-earth-round-and-rotating/8267678001
Fact check: Ample evidence the Earth is round and rotating – USA TODAY
17 nov. 2022The claim: Earth isn’t curved and doesn’t rotate. Humans discovered the curvature and rotation of the Earth thousands of years ago, dating back to ancient Greece. Since then, scientists have only …

https://www.reuters.com/fact-check/humans-knew-earth-was-round-before-satellite-imagery-2023-12-14

https://www.reuters.com/fact-check/humans-knew-earth-was-round-before-satellite-imagery-2023-12-14
Fact Check: Humans knew Earth was round before satellite imagery
14 déc. 2023NASA’s first successful satellite launch occurred in 1958. Humans have known that Earth is round for more than 2,000 years, a spokesperson for NASA’s John F. Kennedy Space Center said to …

https://www.wired.com/2008/06/dayintech-0619

https://www.wired.com/2008/06/dayintech-0619
June 19, 240 B.C.: The Earth Is Round, and It’s This Big
A modern illustration shows how Eratosthenes actually calculated the circumference of the Earth. Courtesy NOAA Ocean Service Education 240 B.C.: Greek astronomer, geographer, mathematician and …

https://www.wired.com/2012/06/june-19-240-b-c-the-earth-is-round-and-its-this-big

https://www.wired.com/2012/06/june-19-240-b-c-the-earth-is-round-and-its-this-big
June 19, 240 B.C.: The Earth Is Round, and It’s This Big
Jun 19, 2012 6:30 AM. June 19, 240 B.C.: The Earth Is Round, and It’s This Big. Greek astronomer, geographer, mathematician and librarian Eratosthenes calculates the Earth’s circumference. His …
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