The heliocentric model, which places the Sun at the center of the universe rather than the Earth, was proposed by Nicolaus Copernicus. However, from the options you provided, none correctly identify Copernicus. Instead, the closest relevant figure who suggested a form of a heliocentric theory was Aristarchus of Samos, although his ideas were not fully developed or widely accepted in his time.

1. **Aristarchus of Samos** - suggested a sun-centered universe but lacked the observational evidence.
2. **Ptolemy** - proposed the geocentric model, placing the Earth at the center.
3. **Thales** - considered one of the first philosophers; contributed to early cosmological ideas but not heliocentric.
4. **Anaximander** - theorized about the universe but did not propose a heliocentric model.

Thus, **Aristarchus of Samos** is the best answer from your list, as he first introduced the idea that the Sun could be at the center.

Question

The heliocentric model, which places the Sun at the center of the universe rather than the Earth, was proposed by Nicolaus Copernicus. However, from the options you provided, none correctly identify Copernicus. Instead, the closest relevant figure who suggested a form of a heliocentric theory was Aristarchus of Samos, although his ideas were not fully developed or widely accepted in his time.

1. **Aristarchus of Samos** - suggested a sun-centered universe but lacked the observational evidence.
2. **Ptolemy** - proposed the geocentric model, placing the Earth at the center.
3. **Thales** - considered one of the first philosophers; contributed to early cosmological ideas but not heliocentric.
4. **Anaximander** - theorized about the universe but did not propose a heliocentric model.

Thus, **Aristarchus of Samos** is the best answer from your list, as he first introduced the idea that the Sun could be at the center.

Knowee AI · Accepted Answer

The heliocentric model, which places the Sun at the center of the universe rather than the Earth, was proposed by Nicolaus Copernicus. However, from the options you provided, none correctly identify Copernicus. Instead, the closest relevant figure who suggested a form of a heliocentric theory was Aristarchus of Samos, although his ideas were not fully developed or widely accepted in his time.

1. **Aristarchus of Samos** - suggested a sun-centered universe but lacked the observational evidence.
2. **Ptolemy** - proposed the geocentric model, placing the Earth at the center.
3. **Thales** - considered one of the first philosophers; contributed to early cosmological ideas but not heliocentric.
4. **Anaximander** - theorized about the universe but did not propose a heliocentric model.

Thus, **Aristarchus of Samos** is the best answer from your list, as he first introduced the idea that the Sun could be at the center.

Who proposed the heliocentric model, placing the Sun at the center of the universe?Aristarchus of SamosPtolemyThalesAnaximander

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Who proposed the heliocentric model, placing the Sun at the center of the universe?

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