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384 BCE
Aristotle
Aristotle is often referred to the grandfather of science. He lives from 384 to 322 bc.. Aristotle, believed in a geocentric Universe or one that believes the Earth is the center of the universe. and that the earth was not a sphere but the stars and other planets were -
168
Ptolemy
Ptolemy was also a believer in the geocentric universe.Ptolemy was an astronomer and mathematician. Ptolemy thought that the planets must move in tiny circles, and the Earth itself moved along an imaginary circle. However none of this was true. -
1473
Copernicus
Copernicus believed in a heliocentric system that meant the sun was the middle of our universe.He also believed that the earth rotated on a axis and rotated. -
1546
Tycho Brahe
Tycho Brahe worked believed in the heliocentric theory meaning that the earth is the center of the universe. However he believed in geocentric. -
1564
Galileo
Galileo had many improvements to astronomy. Such as making a telescope that made you look 20 times closer.He was able to prove the heliocentric theory. -
1570
Hans Lippershey
Hans Lippershey is credited for the discovery of the microscope.The microscope he invented had the first eye hole and an objective lens. -
1571
Johannes Kepler
Johannes believed in a heliocentric universe.Also, that there is a perfect bond between the planets’ periodic times and the multiple cubes of the radious of their orbits,also known as the harmonic law -
Giovanni Cassini
Giovanni Cassini is a astronomer is credited with a number of discoveries and projects, including the original sight of Saturn's moons. There is space craft named after him known as the Cassini space craft -
Sir Isaac Newton
Sir Isaac Newton was credited with the universal law of gravity. He made 3 laws. Newton's first law states that every object will remain still unless a force strong enough to move it will make contact with it -
Difference between reflecting and refracting telescopes
A reflector telescope uses two mirrors instead of two lenses. A refactor however uses two lenses.n a reflector light from an object enters the telescope tube and is reflected off a curved mirror at the end of the tube. In a refactor the job is to gather the light coming from a far way object, such as a star, and bend it into a single point of focus. -
William Herschel
William Herschel is a British astronomer most known for finding the former planet Uranus.He also was the original person to suggest that a nebulae or a cloud of gas was made of stars. -
Percival Lowell
Percival Lowell was a mathematician, businessman, travel writer, and astronomer. He created the Lowell observation center in Arizona.It was built only for it's viewing conditions. -
Ejnar Hertzsprung
Ejnar was the one who classified stars by their color to their absolute brightness. In 1913 he created the luminosity scale of Cepheid variable stars, used for seeing intergalactic stars. -
Albert Einstein
Albert Einstein provided actual evidence for the atomic theory.He could determined the size of atoms.Einstein solved the question about the Photoelectric effect.He proposed the uniqul hypothesis of relativity -
Edwin Hubble
Edwin Hubble was born in America and was a astronomer who, in 1925, was the original person to demonstrate the existence of different galaxies besides the Milky Way, changing the way we see the universe as a whole -
Karl Jansky
Karl was an American engineer whose discovered radio waves from an from outside the earth or its atmosphere. source introduce the development of radio astronomy. -
John Glenn
John Glenn was a NASA astronaut. He was part of the first group of astronauts NASA selected to orbit the earth completely .He did so on Oct. 29, 1998. -
Neil Armstrong
He was on the space mission known as Apollo 11 and became the first human to walk on the moon. He did this on July 20, 1969 and made history. -
Sputnik
The soviet Union invented Sputnik in the international space race or the U.S U.S.S.R . It was the first satellite to successfully orbit the Earth. It took about 98 minutes to orbit the Earth on its oval path. -
Yuri Gagarin
Yuri Gagarin was the first person to reach space. His flight, on April 12, 1961, took around 108 minutes as he circled the Earth for a tiny bit more than one orbit in the Soviet Union's Vostok spacecraft, or Sputnik which lasted 98 minutes -
The Apollo Program
The Apollo program consisted of 17 different missions. The first successful moon mission was Apollo 11. Missions 1,7,8,9 and 10 where for Orbiting the Earth to test different lunar models, however the rest of the missions where for trying to put a human on the moon -
First Space Shuttle flight
Columbia was the first space shuttle to touch space, in April 1981. Columbia carried multiple dozens of astronauts into space during the next 20 years , collecting many achievements . -
Mars Pathfinder expedition
The Pathfinder was created as a technology demonstration of a new way to deliver an instrumented lander and the first robot rover to touch the base of planet mars The pathfinder also made many finds of data well on mars. -
Cassini Orbiter
Cassini's 12 science gadgets were designed to take out highly intelligent scientific studies of Saturn, from gathering data in multiple regions of the interrelation of electric currents, to studying dust particles. -
Black Holes
Researchers previously thought that any spacecraft attempting to use a black hole as a portal of this type would have to deal with terrible nature. There is a new theory that says otherwise there is a theory that says that not all black holes are the same, meaning a space craft may be able to contend with is very gentle and could allow for a very peaceful passage.
