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322 BCE
Aristotle
384-322: He thought that the earth was in the middle of the solar system. He also thought that the stars, sun, and planets went around the earth. He died from stomach disease -
168
ptolemy
100-168: He was a astronomer,geographer, and a mathematician. He thought that the earth was in the middle of the universe. He invented the geocentric theory. -
1543
Copernicus
1473-1543: He was an astronomer, mathematician, translator, artist, and physicist among other things. He believed that the sun was in the middle of the universe. The planets would orbit the sun. -
Tycho Brahe
1546-1601: The Rudolphine Tables consist of a star catalogue and planetary tables. He would name in memory of Rudolph the second. -
Hans Lippershey
1570-1619:Hans Lippershey, also known as Johann Lippershey or Lipperhey, was a German-Dutch spectacle-maker. He invented the telescope. -
Johannes Kepler
1571-1630: Johannes Kepler was a German astronomer, mathematician, and astrologer. He is know for Kepler's laws of plantation. Kepler is a key figure in the 17th-century scientific revolution. -
Galileo
1564-1642: He was known of all of his telescope discoveries, he is perhaps most known for his discovery of the four most massive moons of Jupiter. NASA made a mission to Jupiter and called it Galileo in his honor. -
Giovanni Cassini
1625-1712: He discovered the rings of Saturn. He also made Cassini's Oval. He was also known for his engineering. -
Sir Isaac Newton
1643-1724: He is known for inventing his law of gravitation. He also made the Classical Mechanics. -
William Herschel
1738-1822: He is known for discovering Uranus and its 2 moons. He also formed a theory of stellar evolution. -
Percival Lowell
1855-1916: He founded the observatory in AZ Flagstaff. That is where they discovered Pluto. That was 14 years after his death. -
Karl Jansky
1905-1950: He was the first to find radio waves from the Milky Way. He made radio astronomy. He also built a radio telescope. -
Edwin Hubble
1889-1953: He revolutionized the field of astrophysics. His research helped explain that the universe is expanding. He also made galaxies that were used for decades. -
Albert Einstein
1879-1955: He didn't work directly to make the atomic bomb. he also made the theory of relativity. He also made 1 out of 2 of modern physics. -
Sputnik
1957: Was the first artificial earth satelight. It orbited the earth for 3 weeks before its batteries died. It completed 1440 orbits. -
Ejnar Hertzsprung
1873-1967: he created the Hurtzburg-Russell diagram.It is a scatter plot of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their stellar classifications or effective temperatures. -
Yuri Gagarin
1934-1968: He was the first person to go to outer space. He completed an orbit of earth on the 12 of March 1961 -
John Glenn
1921-2016: He was the first man to orbit the earth 3 times. He served from 1974-1999. -
Neil Armstrong
1930-2012: Was the first person to walk on the Moon. His mission was Apollo 11, Gemnin 8. -
The Apollo Program
1963-1972: Was the third United States human spaceflight program carried out by the National Aeronautics and Space Administration. That also succeeded the Moon landing of 1969-1972. -
First Space Shuttle Flight
The Space Shuttle program was the fourth human spaceflight program carried out by the National Aeronautics and Space Administration. They are the ones that accomplished the Space Routine Transportation. -
Mars Pathfinder Expedition
It was designed as a technology demonstration of a new way to deliver an instrumented lander and the first-ever robotic rover to the surface of the red planet. -
Cassini Orbiter
Space Agency to send a probe to study the planet Saturn and its system, including its rings and natural satellites. -
Difference between re fracturing and reflection telescopes
A reflector telescope uses two mirrors instead of two lenses.A refracting telescope is a type of optical telescope that uses a lens as its objective to form an image. -
New galaxy in the Cosmetic Neighborhood
A super cluster is a large group of smaller galaxy clusters or galaxy groups, it is among the largest-known structures of the cosmos(That is what it is).
