Form 3 Chapter 10 Space Exploration

Galileo Galilei

Ptolemy

Copernicus

Aristotle

Galileo Galilei

Ptolemy

Copernicus

Kepler

Galileo Galilei

Ptolemy

Copernicus

Kepler

A model shows that Earth is the centre of solar system

A model shows that Sun is the centre of solar system

A model shows that moon is the centre of solar system

A model shows that galaxy is the centre of solar system

Both Ptolemy and Copernicus show that planets revolve in circular orbit

Both Copernicus and Kepler show that planets revolve in elliptical orbit

Copernicus and Kepler said that Sun is the centre of solar system while Ptolemy said Earth is the centre of solar system

Ptolemy and Copernicus said that planet revolve in circular orbit while Kepler said planet revolve in elliptical orbit

Vostok 1

Sputnik 1

MEASAT 1

Voyager 2

Yuri Gagarin

Alexey Leonov

Neil Armstrong

Frank Borman

Collects data about planets

Performs experiments in space

Observes distance objects in space

Helps in network and communication

Space shuttle can be used repeatedly but rocket cannot be used repeatedly

Space shuttle will return to Earth but rocket will not return

Rocket carries astronaut, satellite and space probes

Space shuttle carries astronaut, satellite and space probes

To collect data and pictures of Earth and planets

To dispose radioactive wastes into space

To find new place for humans in space

To test nuclear in space