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384 BCE
Aristotle
384-322 BC-Aristotle was a student of Plato. Aristotle made contributions to biology, mathematics, metaphysics, agriculture, dance, theatre, etc. Aristotle was more intelligent than Plato. He became famous for rejecting Plato's theory's. When Aristotle's was alive he had made 200 treaties but only 31 of the 200 had made it. -
100
Ptolemy
100-168 AD- Ptolemy- Ptolemy was a mathematician and a geographer but was most famous for being an astronomer. He explained his theory in a manual he wrote explaining the movement of the stars, moon, sun, and the eclipses. He explain how the sun rise and sun set and how the moon travels around the earth. -
1473
Copernicus
1473-1543 - Copernicus- He proved Ptolemy's theory wrong. He noticed that Ptolemy's model backwards. Instead of the earth being in the middle of the universe and the sun revolving around us it was the sun that was in the middle of the universe and we were revolving around the sun. -
1546
Tycho Brahe
1546-1601 - Tycho Brahe- He spent 15-20 years of his life studying the stars and planets. He made astronomical tools to measure and fix lthe stars. He was the most precise person to adjust the stars before the telescope was invented. He fixed more that 777 stars during his studies. -
1564
Galileo
1564-1642 - Galileo- He was a astronomer, engineer, and a physicist. He had many names like “The father of the scientific method,” or “ The father of modern physics,” He invented both of those methods including modern science. Galileo also invented the celatone which observered Jupiter’s moons and found the longitude of earth. -
1570
Hans Lippershey
1570-1619 - Hans Lippershey- He was also known as Johann Lippershey invented the telescope. He invented it in 1608, it would help with seeing things that were far away. Galileo was the one who invented the telescope but that is not truly correct Lippershey was the one who made the design and refactored it. -
1571
Johannes Kepler
1571-1630 - Johannes Kepler- Johannes was a mathematician, astronomer, and a astrologer. He invented the Keplerian telescope in 1611. It was a better version of Galileo’s telescope, it had and eyepiece instead of Galileo’s concave one. It also had a more complex lens instead of the lens that Galileo had. -
Giovanni Cassini
1625- 1712 - Giovanni Cassini- Cassini’s full name was Giovanni Demoncio Cassini. He was an Italian mathematician, engineer, and a astronomer. He discovered the 4 satellite of Saturn and noted them as the 4 ring of Saturn and was the first of his family to work on the invention of the topograph of France. -
Difference between refracting and reflecting telescopes
Difference between refracting and reflecting telescopes- a reflecting telescopes has 2 mirrors instead of 2 lenses like the refracting telescope. Light from a flashlight reflects off a curved mirror creating a been of light -
William Herschel
1738-1822 - William Herschel - He was a British astronomer. He started observing the night sky in his 30s. He discovered the planet Uranus which had two moons. He also discovered 2,500 celestial objects we still use today, he discovered Enceladus, Titania, and Mimas. Also several gas giants. After his discoveries he began to take a liking to music and became a professional. -
Sir Isaac Newton
1643-1724 - Sir Isaac Newton - Sir Isaac Newton was a astronomer, mathematician, author, theologian, and a physicist. He invented “Newton’s method” which found better approximations to find a valued fraction. He also invented the reflecting telescope which was a combination of curved mirrors to create a light affect. -
Percival Lowell
1855-1916 - Percival Lowell - Lowell known as a businessman but his specialties were also in mathematics, astronomy, and he was also an author. He discovered the red planet Mars which was called the planet of mysteries, he also discovered another planet in Arizona he discovered a planet past Neptune. A small plant called Pluto. -
Ejnar Hertzsprung
1873-1967 - Ejnar Hertzsprung - He was a Danish chemists and astronomer. Hertzsprung discovered the 1627 Ivar which was a elongated stony asteroid which was near earth and was discovered in September 25, 1929. The other thing Hertzsprung discovered was the 1702 kalahari, it was a asteroid belt which orbited the sun. -
Albert Einstein
1879-1955 - Albert Einstein- He was a theoretical physicist who made a theory the theory was called the theory of relativity. Einstein also invented the Einstein refrigerator which had no moving part and need heat to operate and also the gas absorption heat pump which was powered by natural gas, propane, or solar heated water and didn’t use electricity. -
Edwin Hubble
1889-1953 - Edwin Hubble - He was an American astronomer. He played a very important role in establishing the fields of extragalactic astronomy and was known to be one of the most important astronomers of all time. His discovery was one of the most important discovery about the universe he explained how the solar system and universe worked. -
Karl Jansky
1905- 1950 - Karl Jansky - He was an American physicist and a radio engineer. In Aguast 1931 he discovered radio waves emanating from the Milky Way. He is the founding figure of radio astronomy. He built a ridiculous telescope in 1937 to detect to sound wave of the radio it was 9 meters long or 30 feet and he made it in Wheaton Illinois. -
John Glenn
1921-2016 - John Glenn - Colonel John Herschel Glenn Jr. was a marine corps, a businessman, astronomer, politican, and engineer. He was the friend man to circle three times around the earth in 1962. He served NASA from 1974 to 1999. The John Glenn severed as a Senator from Ohio. He died on December 8, 2016. -
Neil Armstrong
1930-2012 - Neil Armstrong- He was an astronaut and a engineer. Neil Armstrong was the frost person to step foot on the moon. He was also a naval aviator a test pilot and a university professor. He was also a Korean War veteran. -
Sputnik
1957- Sputnik- it was the first satellite that orbit around the earth. It would orbit around the earth for three weeks until the batteries die and orbit for two mounts until it falls back into earths atmosphere.The Sputnik orbit around the earth 1,440. The Sputnik was launched on October 4, 1957. -
The Apollo Program
1963-1972 - The Apollo Program- The Apollo Program also known as the project Apollo was the third American to be sent to space. Which was a successful trip just as the first trip with Neil Armstrong and sending the first couple humans out of the atmosphere in 1969 to 1972. -
Yuri Gagarin
Yuri Gagarin- He was a Soviet pilot and cosmonaut. Yuri Gargarin was the first person to travel outside of earth. His space craft completed a full orbit around the earth April 12, 1961. He died on March 27, 1968 at age 34 from the crash of MiG. His flight lasted 108 minutes as his air craft circled around the earth. -
First Space Shuttle flight
1981 First Space Shuttle flight- It started on January 5, 1972. The first official flight was in April 12, 1981, 20 years after the first man flew into space. It was officially completed on August 12, 2011. The mission was exactly two days, six hours, twenty minutes, and fifty three seconds until they came back to earth. -
Mars Pathfinder Expedition
1996- Mars Pathfinder Expedition- It was launched December 4, 1996. The landing site was Ares Vallis, Mars and made a complete landing on July 4, 1997. The Mars Pathfinder Expedition was called “Delta II’’. The vehicle or Delta II was designed to demonstrate what is necessary to deliver a human to Mars. -
Cassini orbiter
1997 Cassini orbiter- Cassini orbiter was the combination of NASA, European Space Agency and the Italian Space Angency to study Saturn and it rings. The Obital insertion was on July 1, 2004 and the mass of the orbiter was exactly 5,712 kilograms or 12,593 pounds. The overall duration of the mission was 19 years and 335 days.
