Carl Sagan

Space explorer

American astronomer, cosmologist with Ukrainian background

1934 – 1996

The purpose of exploration

Initial purpose was to study the outer solar system – Jupiter, Saturn, Uranus and Neptune and eventually interstellar space.

How many voyages

Launched in 1977.Still travelling.

Voyager 1 and Voyager 2.

Did the explorer find what he went exploring for

• Voyager 1 provided detailed images of Jupiter and Saturn and their moons. It also studied the weather, magnetic fields, and rings of those planets.

• Voyager 2 is still the only spacecraft visited Uranus and Neptune.

• Both voyagers leaved the Solar system and entered interstellar space.

What is Sagan famous for

• Voyager spacecrafts provided a lot of important scientific data and they keep going.

• Voyager Golden Record• More than 20 popular science books• TV series “Cosmos”