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322 BCE
Aristotle
384/322 Aristotle is a Greek philosopher and a scientist. He also was a teacher and taught many adults and kids. -
100
Ptolemy
168/100 Ptolemy was a king and a writer. Ptolemy counted the stares and the planets. He studyed outer space and tought people about it. -
1473
Copernicus
1473/1543 Polish scientist Nicolaus Copernicus proposed that the planets instead revolved around the sun. He also studed the earth sun and the other planets -
1546
Tycho Brahe
1546/1601 Tycho Brahe was a astronomer who found out more about outer space. He found a new understanding for the planets moons and stars. -
1564
Galileo
1564/1642 Galileo was a inventor and astronomer. he wrote laws of motion and learned about it. He invented the teliscope -
1570
Hans Lippersheys
1570/1619 He was a astronomer and invented a different telescope
that could see closer to stars and almost planets. -
1571
Johannes Kepler
1571/1630 Johannes Kepler was a German astronomer who found out that the planets orbit the sun/ the laws of planetary motion. He also found out the time it takes planets to move around the sun. -
Giovanni Cassini
1625/1712 He was a astronomer who found 4 of Saturns moons he also found that there is a gap between saturns rings. -
Sir Isaac Newton
1643/1724 He discoverd the composition of white light. Also the Phenomena of colors. Also learned about gravity and how it works. -
William Herschel
1738/1822 He discoverd the planet Uranus and many moons on gas Giants. -
Percival Lowell
1855/1916 He was a American astronomer that studed the planets and he said there is other planets not in are soler system. -
Ejnar Hertzsprung
1873/1967 Ejnar Hertzsprung was a Danish chemist and astronomer who photograph star light. -
Albert Einstein
1879/1955 Albert Einstein was a teacher also discovered the equation that helped explain special relativity. -
Edwin Hubble
1889 Using the color of the stars,discovered the universe is expanding which is called hubble’s law -
Karl Jansky
He created the radio telescope and he was the first radio astronomer and he discovered radio waves emanating from the milky way
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Sputnik
It was a Soviet probe that was described as a silver basketball and it was the first satalite in space. -
Yuri Gaganari
He was the first man to go reach space on board 3KA-3 spacecraft -
John Glen
He was the first man to orbit the earth -
Neil Armstrong
He was the first man on the moon and he made the quote “that is one step for a man and one giant leap for mankind” -
Apollo Missions
The first shuttle in space for research on the stars moons and planets.
