-
367 BCE
Aristotle
planets move
different from stars
Geocentric model - Planets and stars revolve
around Earth on spherical “shells”; Earth is the
center of universe (Ptolemaic system) -
220 BCE
The mariner's astrolabe
also called sea astrolabe, was an inclinometer used to determine the latitude of a ship at sea by measuring the sun's noon altitude or the meridian altitude of a star of known declination -
167 BCE
Hipparchus
Wrote the first star and astronomical objects catalog . First to precession of equinoxes. Calculated distance from moon and earth. -
127
Ptolemy
Ptolemaic model the sun is the center of the universe -
1510
Nicolaus Copernicus
Mathematician and Astronomer made the scientific
Method. -
1546
Tycho Brahe
Known for accurate and comprehensive astronomical and planetary observations. -
1564
Galileo Galilei
Central figure in the transition from natural philosophy to modern science. Known for Kinematics, and fist Telescopes. Also sunspots.Discovered io, Callisto, and Europa -
1570
Hans Lippershey
Was a lens maker from Germany but moved to Netherlands . Believed to be first to apply for a patent for the telescope design -
1571
Johannes Kepler
Tycho Brahe’s assistant Discovered that the orbit -
Giovanni Cassini
Italian who discovered the division of rings of saturn. 4 of saturn’s moons, and the rotation periods of Mars and Jupiter. -
Sir Isaac Newton
Further developed works for Copernicus and Kepler using math. Invented reflecting telescopes in 1668. 3 laws of motion. -
William Herschel
Discovered the planet uranus and its moons. He may have discovered water on mars. In 1800’s He performed an experiment determining that temperature of different colors to the sun on a prism . He found out the colors were red,violet, and infrared. Wavelength=size -
Percival Lowell
Discovered the planet Pluto and studied the “canals” on Mars. Built the Lowell observatory in flagstaff,AZ to study mars. -
Ejnar Hertzsprung
One of the inventors of the Hertzsprung_Russell diagram. The HR diagram shows the correlation between the absolute magnitude (brightness) and the spectral type of a star. -
Albert Einstein
developed the theory of relativity, one of the two pillars of modern physics. And helped study everything from gravitational waves to Mercury's orbit.(1905) -
Edwin Hubble
Using the color of the stars, discovered the universe is expanding. Hubble’s law, galaxies are moving away from each other . -
Karl Jansky
first discovered radio waves emanating from the Milky Way. He is considered one of the founding figures of radio astronomy. -
Sputnik
Russian sent Sputnik into space which was the first satellite, this made the United States work harder which made NASA -
Yuri Gagarin
First human (Soviet) to orbit Earth 108 minutes -
John Glenn
1st U.S Citizen to orbit Earth 3X -
The Apollo Missions
Designed to land humans on earth. There were Apollo 11,12,13,14,15,16,and 17.7and 9 orbited earth. 8 and 10 orbited the moon. 13 tried to land on the Moon but failed due to malfunctions. -
Neil Armstrong
First human to land on the moon in the Apollo mission 11 -
Spacex Falcon Heavy
Falcon Heavy is a partially reusable heavy-lift launch vehicle designed and manufactured by SpaceX. It is derived from the Falcon 9 vehicle and consists of a strengthened Falcon 9
