When was the Voyager1 Launched?	1973
When did Carl Sagan decided to turn around one of the Voyager1 telescopes to take the furthest picture ever taken of the Earth?	17 years later, in 1990
Where was the Voyager1 at that time?	It was speeding out of the solar system — beyond Neptune (our second last planet before Pluto)
How far was from the sun?	3.7 billion miles (6 billion kilometers = 6.000 million km) from the Sun
Where is the Voyager1 today?	Today is still in touch with Planet Earth and is currently the farthest spacecraft from Earth at about 15 billion miles (24 billion kilometres = 24.000 million km) away from us.
At what speed is the Voyager1 travelling as he is leaving the Solar System?	It's travelling at a speed of 61,500 kms per hour (17 km/s = 11 mi/s)
For how much longer the Voyager1 would remain in the solar system?	The Voyayer1 will remain within the confines of the solar system for another 14,000 to 28,000 years
What's the speed of light?	300,000 km/s; 186,000 mi/s
What's the speed of sound?	343 m/s = 0.343 km/s
What's Voyager1 speed related to the sound speed?	17 km/s (50 times the speed of sound)
How long would it take us to reach our closest star (Proxima Centauri) if we could travel at the speed of the Voyager 1?	74,633 years

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