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2,000 years
- Astronomers have been able to prove our planet is a globe for well over 2,000 years, using methods you can recreate at home.
www.skyatnightmagazine.com/space-science/earth-is-round-not-flat5 ways we can prove Earth is round, not flat | BBC Sky at ...
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Dec 21, 2020 · On Aug. 14, 1959, the Explorer 6 satellite took the first photograph of Earth from orbit, but the image lacked detail. On April 1, 1960, the TIROS-1 weather satellite returned the first of its 23,000 television images of the Earth, most of them of sufficient quality for weather forecasting.
There are still people who believe that only during the last four-hundred years have we known that the Earth is a globe. They were taught this at school when they were told the story of Christopher Columbus.
It’s a common line to hear: "500 years ago, they thought that Earth was flat!" But it’s also completely untrue. Astronomers have been able to prove our planet is a globe for well over 2,000 years, using methods you can recreate at home. The first known reference to a round Earth is in ancient Indian religious texts.
Oct 6, 2024 · globe, the most common general-use model of spherical Earth. It is a sphere or ball that bears a map of the Earth on its surface and is mounted on an axle that permits rotation. The ancient Greeks, who knew the Earth to be a sphere, were the first to use globes to represent the surface of the Earth.
- The Editors of Encyclopaedia Britannica
A globe is the only representation of the Earth that does not distort either the shape or the size of large features – land masses, bodies of water, etc. The Earth's circumference is quite close to 40 million metres.
The roughly spherical shape of Earth can be empirically evidenced by many different types of observation, ranging from ground level, flight, or orbit. The spherical shape causes a number of effects and phenomena that combined disprove flat Earth beliefs.
Spherical Earth, refers to any figure of Earth as represented by a sphere. Although other models, including the geoid model (which is based on approximations of Earth’s gravitational field) and the ellipsoid model (which is based on mathematical approximations of Earth’s shape), are more accurate.
