- 
  
  The first instances of the Geocentric model being used in Ancient Greece
- 
  
  The idea of the Heliocentric model is first referred to by Nicolaus Copernicus
- 
  
  The Sextant was first invented, an ancient tool that navigated by the stars
- 
  
  Russians launch the first artificial satellite, Sputnik 1
- 
  
  The dog Laika goes into space, making it the first living thing ever to do so
- 
  
  Russian Probe Luna 3 sends first pictures of the far side of the moon.
- 
  
  Valentina Tereshkova is the first woman in space
- 
  
  Neil Armstrong is the first man to ever step on the moon
- 
  
  The spaceship Challenger explodes at launch, killing 7 astronauts
- 
  
  Discovery launches the Hubble Telescope into Space
- 
  
  The ISS is launched
- 
  
  The Mars Orbiter disappears after orbiting Mars
- 
  
  Dennis Tito is the first tourist in space
- 
  
  Twin Mars Exploration Rover Missions Spirit and Opportunity land on Mars
- 
  
  The planet HD 106906b or the Distant Monster is discovered. This planet has confused many of the cleverest space scientists alive today
- 
  
  Water flow patterns are discovered on mars, indicating that there might be water on mars after all.
- 
  
  Hubble's Partner, and eventually replacement, the James Webb Space Telescope is going to be launched
