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Sep 8, 1543
The heliocentric model-Nicolaus Copernicus
Nicolaus Copernicus invented the heliocentric model, the heliocentric model, centered around the sun. He claimed that all the planets, including Earth, moved in orbits around the sun, and showed how this new system could accurately calculate the positions of the planets. -
Earth's magnetic field
William Gilbert discovered the Earth's magnetic field, he proposed that the Earth acts like a big magnet whose field aligns the small magnet used as a compass needle. -
The Moon is observed.
Galileo observes the Moon. He discovered the Moon had mountains, valleys, and plains like the Earth. He called the dark regions of the Moon maria, the Latin word for seas. -
The Scentific Method
René Descartes dicovered the Scientific Method in 1637 -
The Mercury Barometer
Evangelista Torricelli invents the mercury barometer -
Saturns rings and a moon discovered.
Using a telescope he made, Huygens first identified Saturn's rings and one of Saturn's moons. -
Law of Gravity
1666-Sir Issac Newton discovered the Law of Gravity. This is seen to be the start of Modern Astronomy. -
Microscopic Organisms
Anton van Leeuwenhoek discovered micro-organisms in pond water -
The speed of light
Ole Rømer did the first measurement of the speed of light -
The Leyden Jar
Ewald Jürgen Georg von Kleist invented the Leyden jar -
Uranus is discovered
William Herschel discovers Uranus. While measuring the directions and brightnesses of stars, Herschel found a fuzzy spot that moved among the stars. This was Uranus, the first planet that was not known to the ancients. -
The electric battery
Alessandro Volta invented the electric battery -
Anesthesia
William Morton discovers anesthesia. -
The Periodic Table
Dmitri Mendeleev established the Periodic table -
X-rays
Wilhelm Conrad Röntgen invented the X-ray -
The atomic number
Henry Moseley: defined atomic number -
The Big Bang
Georges Lemaître discovered the theory of the Big Bang -
The chromosome
Oswald Avery proves that DNA is the genetic material of the chromosome -
Men Land on the Moon
Astronauts Edwin Aldrin and Neil Armstrong land on the Moon. -
Hubble Space Telescope
Hubble Space Telescope put into orbit from space shuttle Discovery. -
A sheep is cloned
Roslin Institute cloned Dolly the sheep using the process of nuclear transfer.
