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CUYOS, RUBY JANE P.
11-ABM A

I learned from the ancient astronomy, Astronomy is the oldest of the natural sciences, dating back to antiquity, with its origins in the religious, mythological, cosmological, calendrical, and astrological beliefs and practices of prehistory. As a student we are curious about space, this studies are a fun way to keep their curiosity flourishing! In a beginning astronomy class, children will learn about objects in space and their role in the universe. The ancient astronomers are studying constellations and solar system and theory about from parts on the universe and using ancient telescopes,while modern astronomers are more futuristic than ancient they can see stars in high-tech telescope and able to see planets by photograph on using space probe to study astrology.

When we observe, from Earth, the planets around the Sun, they do not always appear to be moving in one direction in our sky. Sometimes they appears to loop backwards for short periods of time. This is called retrograde motion and is one of the key pieces of evidence that the Sun lies at the centre of the solar system and all the planets revolve around it.

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[ REFLECTION ] BELGA, MICAH P. 11-ABM A 

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[ REFLECTION ] BELGA, MICAH P. 11-ABM A 

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In this lesson which is the ancient astronomy, I have learned something about important findings and contributions of greek astronomers.

Our knowledge regarding the various heavenly bodies can be attributed to the important findings of the Greek astronomers named Anaxagoras, Eudoxus, Aristotle,Aristarchus, Eratosthenes, Hipparchus,and Claudius Ptolemy.

ANAXAGORAS argued that the cutoff shape created by the horizon would be curved if the earth were spherical.

EUDOXUS developed a system based on spheres following Pythagoras's belief that the sphere was the most perfect shape. The homocentric sphere system proposed by Eudoxus consisted of a number of rotating spheres, each sphere rotating about an axis through the centre of the Earth.

ARISTOTLE determined that he could understand the world through observation, logic, and reason. Later scientists dubbed Aristotle the "Father of Natural Science" because his methods formed the foundation of the scientific method centuries after the ancient scholar's death. Aristitle believed that 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. Aristotle's ideas were widely accepted by the Greeks of his time.

ARISTARCHUS was certainly both a mathematician and astronomer and he is most celebrated as the first to propose a sun-centred universe. He is also famed for his pioneering attempt to determine the sizes and distances of the sun and moon.

ERATOSTHENES may have been the first to use the word geography. He invented a system of longitude and latitude and made a map of the known world. He also designed a system for finding prime numbers — whole numbers that can only be divided by themselves or by the number 1.

HIPPARCHUS found a relationship between the lunar and solar distances that enabled him to calculate that the Moon's mean distance from Earth is approximately 63 times Earth's radius.

CLAUDIUS PTELOMY work enabled astronomers to make accurate predictions of planetary positions and solar and lunar eclipses, promoting acceptance of his view of the cosmos in the Byzantine and Islamic worlds and throughout Europe for more than 1400 years.

I am grateful regarding their different findings and contributions. They are the best greek astronomers in ancient astronomy.

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I learned that the ancient Greeks thought the Earth was at the center of the Universe. This is known as the "geocentric model" of the universe. Geocentric refers to "Earth-centered." The geocentric model explained why the stars appeared to rotate once a day around the Earth and why planets appeared to move faster than stars. The ancient Greeks produced a great deal of work in astronomy and mathematics, among other fields.

Ancient Greeks such as Aristotle recognized that Earth and the Moon are spheres and understood the phases of the Moon, but they rejected the idea that Earth moves due to their inability to detect stellar parallax. Eratosthenes measured the size of the Earth with remarkable accuracy. Aristarchus was the first known model to place the Sun at the center of the known universe, with the Earth rotating around it. Eudoxus described constellations schematically in two works, Phaenomena and Mirror, as well as the phases of fixed stars (the dates when they are visible) and the weather associated with different phases. According to Anaxagoras, the sun is a hot rock, and the moon shines from the reflected light of the sun. He also understands that eclipses occur when the moon passes through the earth's shadow (a lunar eclipse) or when the moon passes between the sun and the moon (a solar eclipse). Hipparchus made numerous astronomical observations, including cataloguing stars, defining the system of stellar magnitudes, and discovering precession from the apparent shift in the position of the north celestial pole. In his Almagest, Ptolemy of Alexandria summarized classic astronomy; he explained planetary motions, including retrograde motion, with remarkable accuracy using a model centered on Earth. For over a thousand years, this geocentric model, based on combinations of uniform circular motion using epicycles, was accepted as authoritative.

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I've recently learned that the Golden Age of early astronomy was centered in Greece. The philosophers perceive what is occurring on around them, such as the orbits of stars and other bodies. I also unearthed that a star orbited the Earth. Aristotle alleged that if the moon and sun were both spherical, then the earth might be as well. Throughout a lunar eclipse, the earth summons a circular shadow on the moon. Hipparchus, Anaxagoras, Eudoxus, Aristotle, Aristarchus, Eratosthenes, and Claudius Ptolemy were all philosophers.

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Pineda Princess Seven A
11-ABM-A
I have learned that is was a greece that the Golden Age of early astronomy was centered. The philosophers explain the events happening around them including the movements of star and other bodies. I have learned also that star traveled around the earth.
Aristotle argued that if the moon and the sun were both spherical, then perhaps, the earth was also spherical.
The earth casts a circular shadow on the moon during a lunar eclipse. There are 7 greek astronomers: Hipparchus, Anaxagoras, Eudoxus, Aristotle, Aristarchus, Eratosthenes and Claudius Ptolemy.

Hipparchus -  He observed and compared the brightness of 850 stars and
arranged them into order of brightness or magnitude.

Anaxagoras - Anaxagoras was able to explain what causes the phases of the moon.

Eudoxus - proposed a system of fixed spheres

Aristotle - He believed that the earth was the center of the universe

Aristarchus- He learned that the sun
was many time farther than the moon and that it was much larger than the
earth.

Eratosthenes - The first successful attempt to determine the size of the earth was
made by him

Claudius Ptolemy - Claudius Ptolemy developed a model that was able to explain the observable
motions of the planets.

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