Ptolemy was important in the history of astronomy because he ________.
1) developed a model of the solar system that made sufficiently accurate predictions of planetary positions to remain in use for many centuries.
2) developed a scientifically accurate model of the universe.
3) was the first to believe in an Earth-centered universe.
4) was the first to create a model of the solar system that placed the Sun rather than Earth at the center.
5) was the first to believe that all orbits are perfect circles.