Question

what were the contributions of early astronomers?
question 2 (5 points)
what is the difference between the geocentric model and the heliocentric model of the solar system?

Explanation:

Early astronomers made several important contributions. They developed calendars based on celestial observations, which were crucial for agricultural and social activities. They also made detailed records of celestial events like eclipses and planetary movements. These records laid the foundation for later astronomical studies.

The geocentric model of the solar system places the Earth at the center, with all celestial bodies (sun, moon, planets) orbiting around it. This was the dominant view for a long time, supported by ancient philosophers like Ptolemy. The heliocentric model, on the other hand, has the Sun at the center, with planets (including Earth) orbiting around it. This model was proposed by Copernicus and later supported by Galileo's observations (e.g., phases of Venus) and Kepler's laws of planetary motion.

Answer:

Early astronomers contributed by creating calendars and recording celestial events. The geocentric model has Earth at the solar - system center; the heliocentric model has the Sun at the center.