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168
Ptolemy
Ptolemy also believed that the earth was the center of the universe.He even started the incorrect prediction that to find out the movement of the planets he would combined the movement of the stars with math and then predict the movement of the planets.He also worked out that the planets moved in epicycles (which means a small circle whose center moves around the circumference of a larger one) and the universe accepted this for many centuries even though it was all false information. -
322
Aristotle
Aristotle was also called grandfather,he was the philosopher of plato. He believed that the geocentric Universe and planets and stars were perfect spheres his further also thought that the movements of the planets and stars must be circular since they were perfect and if the motions were circular. Aristotle was the first to study plants,animals and people in a scientific way,Aristotle believed the experimenting was the logical way of thinking. -
1543
Copernicus
Copernicus brought up heliocentric (which means the the sun is in the middle) to the world because star watchers were the ones who brought it up.But he used his own observations which was the movements of the planets to backup it up this also includes the idea of the earth rotating on its axis.Those who did study his work intact often did so in secret. They were called Copernicans. -
Tycho Brahe
Tycho was Danish astronomer and worked in developing astronomical instruments.However Tycho´s first interest was the solar eclipse this event inspired him to be a great astronomer. This lead him to the solar system he made the observation that the planets move around the sun and the moon moves around the earth and while all of this is happening the earth is moving. -
Hans Lippershey
Hans was the inventor of the telescope -
Johannes Kepler
Kepler came up with the laws of planetary motion this means (1) the planets move in elliptical orbits as the Sun is; (2) the time necessary to traverse any arc of a planetary orbit is the same to the area of the sector between the central body and that arc; and (3) there is an exact relationship between the squares of the planets’ periodic times and the cubes of the radii of their orbits. -
Galileo
Galileo discovered that the sun had dark spots.With the Telescope Galileo discovered lots of things like he drew all of the phases of the moon,the appearance of Saturn,discovered that Venus also goes through phases. -
Giovanni Cassini
The Cassini discovered the Cassini division,the dark spot or gap between the rings A and B of Saturn,also the four moons of Saturn.In addition to all of his discoveries he was the first to record the observations of the zodiacal light.He was also the first to observe the shadows of Jupiter´s satellites. -
Sir Isaac Newton
Isaac determined the three laws of motion, 1 explains how objects move at the same velocity unless an outside force act upon it for example a glass on a table that glass will not move unless a hand or gravity pushes it off.Isaacs second law of motion is a calculation for how forces interact, for example the force acting on an object is equal to the objects mass times the acceleration it undergoes.The third and final law states that for every action in nature there is a equal opposite reaction. -
William Herschel
He was the founder of sidereal (stars) astronomy he also discovered planet Uranus and two moons,Saturn´s 6th and 7th moons. -
Percival Lowell
He learned the discovery ¨canals¨on mars.Lowell was the founder of Lowell Observatory but he was best know for fueling speculation that there was life on mars.He was also responsible for the naming of Pluto. -
Karl Jansky
Karl discovered that the center of the milky way emits radio waves. He was not an astronomer but he was a engineer,he bulit a ¨rotating antenna to get all-sky coverage at their chosen frequency of 20.5 MHz (wavelength about 14.5 meters), and it quickly got the nickname of “Jansky’s Merry-go-round.” With it, he picked up thunderstorms and a strange hiss that moved throughout the day.¨ (https://public.nrao.edu/gallery/karl-jansky-and-his-merrygoround/) -
Edwin Hubble
He demonstrated the existence of galaxies,the existence of the level of red shift light.Edwin was known for the telescope, the telescope provided him with valuable research and breakthroughs in astrophysics. -
Albert Einstein
He gave evidence that atoms and molecules actually exist,also proposed that light came in bundles of light,measured the speed of light,law of gravity -
sputnik
Size of basketball and weigh about 180 pounds had four long antennas on the button while it was circling the earth ( for 21 days) . This was to see is it was possible to put a man on the moon -
John Glenn
The John Glenn Astronomy Park is dedicated to sparking an interest in science, learning, and exploration by sharing with visitors the wonders of the sky, both day and night. -
Ejnar Hertzsprung
He classified stars by there color to their absolute brightness. -
Yuri Gagarin
First to fly into space -
Neil Armstrong
Armstrong and Aldrin collected samples and conducted experiments. -
The Apollo program
It was the third human from the United States in a space flight -
First space shuttle flight
The first space shuttle was was the first orbital spaceflight of NASA's Space Shuttle program. The first orbiter, Columbia, launched on 12 April 1981 and returned on 14 April, 54.5 hours later, having orbited the Earth 36 times. Columbia carried a crew of two – mission commander John W. Young and pilot Robert L. Crippen. -
Mars pathfinder expedition
Mars Pathfinder is an American robotic spacecraft that landed a base station with a roving probe on Mars in 1996. -
Cassini orbited
The Cassini–Huygens mission, commonly called Cassini, was a collaboration between NASA, the European Space Agency, and the Italian Space Agency to send a probe to study the planet Saturn and its system, including its rings and natural satellites. -
The difference between retracting and reflecting telescopes
A reflector telescope uses two mirrors instead of two lenses.The reflecting telescope has a second, small, flat mirror in the middle of the tube reflects this image to the eyepiece. -
The most current astronomy event
Collision with a Mars-size body — the same body thought to have formed the Moon — might also have brought life-supporting volatile elements to Earth. https://www.skyandtelescope.com/astronomy-news/did-a-mars-size-body-bring-life-essential-elements-to-earth/
