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Ancient Models of the Solar System
Untill the improvement of the telescope, the skies were observed with the naked eye. To observers, it appeared that the Sun, Moon, and stars moved around earth. This caused them to belive that Earth was not moving.This geocenric or earth-centered model became part of ancient greek thought in early 6 BCE. Aristotle was among the first thinkers to propose this model. His model placed all the moon, sun, planets and stars on a series of circles rotating Earth. -
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Aristarchus and the first heliocentric models
Aristarchus was a greek astronemer and mathematician. He is reported to have created the first heliocentric model of the solar system. His his model was not accepted at the time and people were punished for thinking stuff like that. Aristarchus also attempted to measure the relarive distance between the moon and sun. This was a huge cotribution to modern day science. -
Jun 10, 1473
Copernicus and His Models
Nicolaus Copernicus felt that ptolemy's model of the solar system was too complicated. He was aware of the heliocentric idea of aristarchus when he developed the first heliocentric model of the solar system. In his time observations were still based on the naked eye. Because data had not changed much sinse ptolemy Copernicus adopted the idea that planet paths could be like perfect circles. Copernicus' model is what is seen as the first step to modern space exploration. -
Kepler and his models of the solar system
Johannes Kepler was a german mathematician and astronemer. After carfully analyzing observations of the plannets, he realized that requiring planetary rotations to be exacly circular did not fit the observations perfectly. Kepler tried others paths and found that elipses fit the best. -
Galileo and his great importance
Galileo galilei was the first scientist to approach questions that today we call scientific method. He mad huge improvments to the newley invented telescope. He used his new telescope to veiw celectial objects such as outer plannets. Galileo veiwed the moons Io,Europa castillo and ganyemede orbiting jupiter. Today we call these the galilean satelites. His obervations showed that Earth was not the only object that could be orbited. This gave a lot of support to the heliocentric model. -
first rocket launched
the first rocket that coild fly high enough to make it to space was the V2 missile by germany. however the first rocket that brought humans into orbit was by the soviet union in 1957 -
First Artificial Satellite
The first artificial satelitte was launched into space in 1957 by the Soviet union. Since then, 1000's of satelites have been launched into orbit. An artificial Satelite is a man made object that has been launched into orbit. Satelites have also been launched to orbit the moon, Mercury, Venus, Mars, Jupiter, Saturn, Vesta, Eros and Ceres. -
Moon Mission
This was the first of the United states' moon missions called appollo missions. there were 17 missions all focused on the following goals
Establishing the technology to meet other national interests in space.
Achieving preeminence in space for the United States.
Carrying out a program of scientific exploration of the Moon.
Developing man's capability to work in the lunar environment -
robotic mars rovers
Mars exploring rovers are some of the newest space exploration technology out there. Rovers are dropped on to the surface of mars and photograph land forms and features. -
Ptolemy and His Models
Ptolemy was an astromemer, geographer and mathematician in Alexandria, Egypt which was part of Rome. Ptolemy developed a deeply detailed geocentric models that were used by astronemers for the next 14 centuries.
