-
13,000 BCE
The Big Bang
( From 13 - 20 billion years ago)This theory states that, in the beginning, the universe was all in one place. All of its matter and energy were squished into an infinitely small point, a singularity. The laws of physics which applied at that instant are not understood at all. Something unknown caused the universe to explode, and thus began the expansion that we see today. -
2000 BCE
Our Calendar
First solar-lunar calendars -
1923 BCE
Galaxies outside de Milky Way
Hubble shows that galaxies exist outside the Milky Way galaxy -
1781 BCE
Discovery of Uranus
The discovery of Uranus by Hershcel -
1668 BCE
First reflecting telescope
The first reflecting telescope was built by Newton -
1666 BCE
Polar caps noted by Cassini
Martian polar ice caps are noted by Cassini -
1543 BCE
Heliocentric theory of the universe
Copernicus publishes his heliocentric theory of the universe -
Sep 13, 1572
Discovers a supernova in constellation
Tycho Brahe discovers a supernova in constellation of Cassiopeia -
Galileo uses telescope for astronomical purposses
Galileo uses telescope for astronomical purposes. He discovers 4 Jovian moons, the Moon's craters and the Milky Way galaxy. -
First liquid rocket fuel
Robert Goddard uses first liquid rocket fuel -
Sputnik
Sputnik, first object to orbit the Earth, launched by the Russians. -
Explorer 1
Explorer 1 launched. This was the first U.S. satellite to orbit the Earth. -
Jupiter´s origin
Galileo discovers origin of Jupiter's Rings. -
NASA looses mars climate orbiter ...
NASA loses the Mars Climate Orbiter and the Mars Polar Lander. -
Space Shuttle
Space Shuttle Endeavor makes a detailed, global map of Earth -
Water on MARS
New evidence found for water on Mars.
