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168
Ptolemy
100-168 He lived until 170 ce. Ptolemy was a writer, they represent Greco Roman science. His Grecontric is now called Ptolemy System. He is an Egyptian astronomer and geographer of Greek. He argued that the earth is a staioninary sphere -
322
Aristotle
384-322 Aristotle is a towering person at Greek Philosophy, he was also student of Plato. He touched about every areas of knowledge. He invented the system of reasoning. -
1543
Copernicus
1473-1543 Copernicus proposed that the revolved around the sun. His model was not comepletly perfect it build at stong foundation for him to understand of the motion heavenly bodies. However most of his time he studied math and astronomy -
1570
Hans Lippershey
1570-1619 Hans Lippershey made a 30-year patent for his invention, which he called a kijker, “looker”, -
1571
Johannes Kepler
1571-1630 Johannes Kepler thought the planet moved in elipitical orbits -
Tycho Brahe
1564-1601 Tycho Brahe was a danish astronomer, he worked on instruments. Tycho Brahe made the most accurate celestial observations of his time and challenged the prevailing belief in how the universe was organized. -
Galileo
1564-1642 Galileo developed the scientific method, invented the telescope, the early type of a thermometer, and the 4 Jupiter moons. He began studying motion. All of his inventions and discoveries made scientist think for decades. -
Giovanni Cassini
1625-1724 Giovanni Cassini was the first person to include the first observations of four of Saturn's moons. For this reason, the Cassini spacecraft that launched in 1997 and plunged into the planet in 2017 was named after him. He was most interested in math and poetry. Cassini had arguably the greatest impact on the scientific world. -
Sir Isaac Newton
1643-1724 Sir Isaac Newton. Newton invented calculus and provided a clear understanding of optics. Most significant work had to do with forces, and specifically with the development of a universal law of gravity. He also invented an upgraded telescope with better lenses. -
William Herschel
1738-1822 William found something in the comet and thought it was a comet. He was mistaken and it was a planet. This planet he named to Uranus, today it is still called that. He also found Saturn's 7th moon. -
Karl Jansky
1905-1950 Karl Jansky discovered the radio waves, this started a new science. He improved radio receivers and data-processing methods that have allowed radio astronomers to study radio sources. This helped a lot of scientist and people understand stuff so they could improve. -
Percival Lowell
1855-1916 Lowell worked in his family for bussnies for textiles, he wrote a lot of books too. Found vapor and thought of a bad and thin atmosphere. He also never really study the planets. -
Edwin Hubble
1889-1953 Edwin Hubble made several discoveries that changed how scientist looked at things. When Hubble was looking in the telescope it showed a milky way and there was something inside it called a Cepheid variable. Cepheids are special because their pulsation allows for precise measurements of distance. Hubble calculated how far away each Cepheid lay and how far to each nebula, realized they were too distant to be inside of the Milky Way. It contained billions of stars. -
Albert Einstein
1879-1955 Albert Einstein is often looked as one of the most influential scientists of the 20th century. Einstein's equation helped explain special relativity – E = mc2 – is famous even for those who don't understand the underlying physics. Late in Einstein's life, he engaged in a series of private debates with physicist. Einstein later incorporated quantum theory in his own calculations. -
Sputnik
1957 Sputnik , sometimes called Sputnik 1 ,went into space on Oct. 4, 1957. The achievement sent a shock wave through the people, who had felt a sense of technological economic boom. This was to help in the world war 1 and 2. The Sputnik was a silver sphere with four long antennas. It was about 22 inches and weighed 183 lbs. Circling the Earth every 98 minutes, it used a radio beacon that was able to pinpoint spots on the Earth's surface. -
Ejnar Hertzsprung
1873-1967 Ejnar Hertzsprung was more famous for modern astronomy, he invented the luminosity scale. Ejnar developed in astronomy, graph in which the absolute magnitudes,intrinsic brightness of stars are plotted against their spectral types. The charts were made by Hertzsprung and Russell independently. On the diagram stars are ranked from bottom to top in order of decreasing magnitude. Stars of the galactic arm in which the Sun is located tend to fall into distinct regions on the diagram. -
Yuri Gagarin
1934-1968 Yuri Gagarin was the first man in space. He went on April 12, 1961 it lasted 108 minutes as he circled the Earth for a little more than one orbit in the Soviet Union's spacecraft. Gagarin became a cultural hero in the Soviet Union. Since this event occurred U.S had been improving there space crafts and launching and testing them into space with people. -
The Apollo Program
1963-1972 The Apollo Program contained of 17 missions to send the first person to the moon. They would launch the Apollo spacecraft Neil Armstrong and Buzz Aldrin, while a third Michael Collins remained in orbit. NASA's final Apollo moon mission was Apollo 17 in 1972. -
First Space Shuttle Flight
1981 Columbia was the first shuttle to reach space, in 1981. Columbia carried dozens of astronauts into space during for the next two decades. Columbia also underwent upgrades as technology advanced. Spacecraft began in earnest in 1966, when NASA was looking to figure out what programs would come after Apollo. -
Mars Pathfinder Expedition
1996 Mars Pathfinder Expedition This was important to NASA NASA decided to use a cocoon of airbags instead. After going through the higher parts of the atmosphere, Pathfinder deployed a parachute and also shed the heat shield that protected the spacecraft. -
Cassini Orbiter
1997 Cassini Orbiter one of the most ambitious missions for NASA The spacecraft was launched with two elements: the Cassini orbiter and the Huygens probe. Cassini reached Saturn and its moons in July 2004, coming home with valuable data that transformed our understanding of the Saturnian system. This helped a lot scientist understand Saturn. -
The difference between Refracting and Reflecting telescopes
The difference between Refracting and Reflecting telescopes is, a reflector telescope uses two mirrors instead of two lenses. Newton developed this telescope to combat chromatic aberration. Light from an object enters the telescope tube and is reflected off a curved mirror at the end of the tube. -
Neil Armstrong
1930-2012 Neil Armstrong was in Apollo 11. Also the first man on space, was Neil Armstrong was a NASA astronaut most famous for being the first person to walk on the moon, on July 20, 1969. An accomplished test pilot, Armstrong also flew on the Gemini 8 mission in 1966. Armstrong was famously reticent about his accomplishments, preferring to focus on the team that helped him get to the moon rather than his own first steps. -
John Glen
1921-2016 John Glen was the oldest man in space and first to orbit the earth. He was in advanced flight training. He also orbited Earth three times over the course of almost five hours, traveling faster than 17,000 mph.
