It's probably they used to somehow study the planets. Already they supposedly "knew" that the other planets evolved around Earth, so then it would have been easier for them to know that the planets lined up every 26 000 years.
THEY DISCOVOR STUFF like stars and planets
Yes, the earliest telescopes made things look thousand of times closer than they were, and modern telescopes still do that.
They created accurate calendars based on observations of the sun, mon, and planets
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We can see more stuff.
Telescopes were first used for astronomical observations in the early 17th century, primarily to study celestial objects such as the Moon, planets, and stars. The first recorded use of a telescope for astronomy was by Galileo Galilei in 1609, who made significant discoveries including the moons of Jupiter and the phases of Venus. These advancements challenged existing views of the cosmos and laid the groundwork for modern astronomy. Ultimately, telescopes expanded our understanding of the universe and our place within it.
Modern Marvels - 1994 Observatories Stonehenge to the Space Telescopes 3-3 was released on: USA: 8 June 1997
Celestial body is only a general name for an object in the sky, particlarly applied to the night sky (but including the Sun). The moon, stars, planets, etc., are considered celestial bodies. Most of them were identified by the ancients; in modern times the more distant planets from Earth were discovered by use of more powerful telescopes.
No. The Myans were very religious peoples, they just worshipped in a very different way than people of modern times.
There were several of them, but the most important include the Mayans and Aztecs.
No exact number is known. Certainly many billions of them
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