Column A
Column B
1. Hipparchus
A. He proposed a system of fixed spheres. He believed that the
sun, the moon, the five known planets and the stars were attached
to these spheres.
B. He was able to explain what causes the phases of the moon
According to him, the moon shone only by reflected sunlight.
2 Aristarchus
3. Eratosthenes
4. Anaxagoras
C. The very first Greek to profess the heliocentric view. He learned
that the sun was many times farther than the moon and it was
much larger than the earth.
D. He made the first successful attempt to determine the size of
the earth. He did this by applying the geometric principle.
E. He is considered as the greatest of the early Greek
astronomers. He observed the brightness of 850 stars and
arranged them
into order of brightness or
magnitude.
5. Eudoxus​