The great interstellar voyagers - Voyager 1 and 2

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Welcome to all on  blog science of life by Tejas Kisan ghag, Roha .......

The great voyagers in the universe.....

Voyager 1 and Voyager 2 by NASA

( Voyager spacecraft )
The Voyager program is an American scientific program that employs two robotic probes, Voyager 1 and Voyager 2, to study the outer solar system. The probes were launched in 1977.

(Launching of Voyager 2 spacecraft)

To take advantage of a favorable alignment of Jupiter, Saturn, Uranus, and Neptune. Although their original mission was to study only the planetary systems of Jupiter and Saturn, Voyager 2 continued on to Uranus and Neptune. The Voyagers now explore the outer boundary of the heliosphere in interstellar space.

For the second time in history, a human-made object has reached the space between the stars. NASA's voyager 2 probe now has exited the heliosphere - the protective bubble of particles and magnetic fields created by the Sun.

Voyager spacecraft are now too in contact with us. It is only duty the communication system. 

At first, the signal of 20 kilo Watt is sent to the the voyager spacecraft which is now 21.2 billion kilometres away from Earth. Which requires 20 hours. Then the signal is catch by voyager spacecraft. Then it send back signal of 20 watt back to earth.

 This is due to the communication management by the NASA.

                                                  Information and pic, gif source : Wikipedia and internet.

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