Transcript Early Astronomers

Early Astronomers
the evolution of our space model
Geocentric model (1)
-
Earth centered
universe
-
Earth is the center
of the solar system
-
Stars rotate around
the Earth.
Earth centered model
Earth
Aristotle (2)
-
Grandfather of
science
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Used observation
based science.
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Did experiments to
study scientifically.
-
So respected his
wrong ideas were
taught.
Star trails
Ptolemy (3)
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Astronomer and
mathematician
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Published ideas in
books.
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He “made” the
math work for the
geocentric model.
Heliocentric model (4)
-
Sun centered
universe.
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Planets are in orbits
around the Sun.
-
Stars are distant
and do not move.
Copernicus (5)
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Brought heliocentrism
to the Renaissance
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Used scientific
observation.
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Discovered Earth
rotates on its own axis
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His followers were
called Copernicans
Sun centered model
Copernicus’s
diagram
Sun
Sun
Sun
Galileo (6)
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Built a telescope to
prove Copernican
model correct.
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Forced to admit
wrong-doing by the
Church
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Although locked
away for life, his
ideas were shared in
books
Sun
Sun
Modern Universe Model
- today’s model