For Aristotle the moon had been a perfect sphere , and that was how people still saw it in 1609. A perfect sphere, of course, is perfectly smooth. The pure moon was not of base earth.
What did Aristotle observe when he looked at Earth's shadow crossing the moon?
Scientists have studied eclipses since ancient times. Aristotle observed that the Earth's shadow has a circular shape as it moves across the moon . He posited that this must mean the Earth was round.
What did Galileo notice about the moon that was different from Aristotle?
At the time, most scientists believed that the Moon was a smooth sphere, but Galileo discovered that the Moon has mountains, pits, and other features, just like the Earth .
Why did Aristotle think the Earth was the center of the universe?
Aristotle, who lived from 384 to 322 BC, believed the Earth was round . He thought Earth was the center of the universe and that the Sun, Moon, planets, and all the fixed stars revolved around it. ... He thought that each space body moved in a small circle (an epicycle) that was itself orbiting Earth.
Who first drew the moon?
Englishman Thomas Harriot made the first drawing of the moon after looking through a telescope several months before Galileo, in July 1609.
What conclusion did Galileo draw about the moon?
The conclusion he drew was that the changing dark lines were shadows and that the lunar surface has mountains and valleys . The Moon was thus not spherical and hardly perfect. Galileo was not the only observer of the Moon.
Who discovered the moon wasn't smooth?
Only a few centuries before Galileo had risked ridicule when, based on telescopic observations, he suggested that the moon's surface was not smooth. Galileo's drawings of craters on the moon were revolutionary because of the persistence of ideas about celestial objects.
What are the characteristics of Aristotle's cosmic model?
The Elements in Aristotle's Cosmic Model
Earth was the heaviest, water less so, and air and fire the lightest . According to Aristotle the lighter substances moved away from the center of the universe and the heaver elements settled into the center.
How did Anaxagoras discover the Earth was round?
In the 5th century B.C., Empedocles and Anaxagoras offered arguments for the spherical nature of the Earth. During a lunar eclipse, when the Earth is between the sun and the moon, they identified the shadow of the Earth on the moon . As the shadow moves across the moon it is clearly round.
What reason did Aristotle give for his belief that the earth is not moving?
He believed the initial motion of the objects was from a ‘prime body' who acted on the outermost sphere . Since these spheres are moving in a circular motion, they could neither have weight or lightness as they cannot move naturally or unnaturally towards or away from the centre.
Did Aristotle believe in astrology?
Aristotle: Concentric shells of the elements. celestial realm and the celestial motions ‘steer' the terrestrial motions. An important consideration here is that Aristotle did not recognize astrology as a discipline .
What is Aristotle's geocentric model?
Aristotle's model of the universe was also geocentric, with the Sun, Moon, planets, and stars all orbiting the Earth inside of Eudoxus ‘ spheres. Aristotle believed the universe is finite in space but exists eternally in time. ... A geocentric universe depicted in 1660.
Did Aristotle think the Earth was the center of the universe?
Aristotle (384 BC–322 BC) studied under the great philosopher Plato and later started his own school, the Lyceum, at Athens. He, too, believed in a geocentric Universe and that the planets and stars were perfect spheres, though Earth itself was not.
What is unique about the Moon?
The Moon is unique in that it is the only spherical satellite orbiting a terrestrial planet . ... Another distinct property the Moon possesses lies in its size compared to the Earth. At 3,475 km, the Moon's diameter is over one fourth that of the Earth's. In relation to its own size, no other planet has a moon as large.
Which is the brightest crater on the Moon?
Aristarchus is a lunar impact crater that lies in the northwest part of the Moon's near side. It is considered the brightest of the large formations on the lunar surface, with an albedo nearly double that of most lunar features.
Where did the Moon come from?
What is most widely accepted today is the giant-impact theory. It proposes that the Moon formed during a collision between the Earth and another small planet , about the size of Mars. The debris from this impact collected in an orbit around Earth to form the Moon.
