-
350 BCE
Aristotle (384-322) B.C
Proves the earth is a sphere -
190 BCE
Hipparchus (190-120 B.C)
Calculated Distance between earth and the moon, made the star catalog, made a scale to say how bright the stars are -
100
Ptolemy- 100-168 AD.
Made a geocentric model, an earth centered model, was wrong -
1473
Nicolaus Copernicus: (1473-1543)
Mathematician and astronomer, proposed the earth revolved around the sun -
1546
Tycho Brahe (1546-1601)
Made a recording from what he saw for 20 years, made his own model and where very accurate, in which the planets around the sun, and the sun revolved around the earth -
1564
Galileo Galilei (1564-1642,)
Born in Italy, he made his own telescope, saw craters,valleys, and mountains on the moon, mapped starts and keep accurate recordings of sunspot activity and the phases of Venus. -
1570
Hans Lippershey (1570-1619)
Hans Lippershey (1570 - September 1619)-invented the first practical telescope -
1570
Hans Lippershey (1570 - September 1619)
invented the practical telescope -
1571
Johannes Kepler (1571-1630)
Student of Tycho, made the three laws of planetary motion, one called elliptical orbit. -
Refracting Telescope
The refracting telescope telescope that uses a lens as its objective to form an image. -
Giovanni Cassini (1625-1712)
discovered the rings of saturn, found 4 moons orbiting, and measured the periods of rotation of Mars and Jupiter -
Giovanni Cassini (1625-1712)
discovered the rings of saturn, found 4 moons orbiting, and measured the periods of rotation of Mars and Jupiter -
Issac Newton (1643-1727)
Made universal gravitation, many theories used this law, as well as this he used math to prove his laws. Newton showed that the laws governing astronomical bodies were the same laws governing motion on the surface of the Earth. -
Isaac Newton (1643-1727)
made universal gravitation, many theories used this law, as well as this he used math to prove his laws. Newton showed that the laws governing astronomical bodies were the same laws governing motion on the surface of the Earth. -
Reflecting Telescope 1668
The reflecting telescope uses a single or combination of curved mirrors that reflect light and form an image. -
William Herschel (1738-1822)
discovered Uranus and the two moons, found 2 more moons of Saturn and multiple asteroids. Figured out the temperature of the different colors of sunlight pass through a prism -
William Herschel (1738-1822)
Discovered Uranus and the two moons, found 2 more moons of Saturn and multiple asteroids, figured out the temperature of the different colors of sunlight pass through a prism -
Percival Lowell (1855-1916)
Discovered Pluto and studied mars, built the Lowell observatory in Flagstaff. -
Percival Lowell (1855-1916)
discovered Pluto and studied mars, built the Lowell observatory in Flagstaff. -
Ejnar Hertzsprung (1873-1967)
Inventor of the Russell diagram,shows correlation between the absolute magnitude and the spectral type -
Albert Einstein (1879-1955)
Theory of Relativity and gravitation -
Karl Jansky-(1905-1950)
Invented radio astronomy through radars. -
Sputnik 1957
This was the first artificial earth satellite. It was launched by Soviet Union into elliptical orbit. This made the U.S change the education system to focus on math and science. This also made the U.S made NASA -
Apollo Missions (1961-1975)
This were a series of missions to the moon, they had 6 successful attempts. -
Yuri Gagarin(1934-1986)
In 1961, First man to go to space, his spacecraft did a complete orbit. -
John Glenn (1921-2016)
First American to orbit space, also second man to go on the moon -
Neil Armstrong (1930-2012)
In 1969 he went to the moon,he was the first man to step on the moon -
Space Shuttle Columbia
In 1981, this was the first space shuttle, it launched like a rocket, but landed like an airplane -
Mars Pathfinder
In 1996, a rover was launched to probe mars, and in 1997 it landed. -
Cassini Orbiter 1997
The Cassini orbiter was a probe sent to Saturn to take in depth pictures and study the rings and the system. It was named this because an Astronomer named Giovanni Cassini was studying Saturn -
Space X Falcon Heavy 2018
The Falcon Heavy is a heavy, reusable launch craft that can lift up to 64 metric tons.
