Voyager and Viking Programme

[Slimstar]

I am just wondering, programmes such as the voyager and viking travelled such a long distance, taking years to reach their destination, when they send back their signals of image of Mars and the Jovian systems, are the signals lag by years as well?

[Stu]

No, the light travel time for the signals to reach us is only 30 or 40 minutes from Jupiter, or a number of hours from somewhere like Pluto. The images are then processed but basically they are 'current', and not lagging by years

Stu

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[daiwelly]

Hi

Radio waves travel at the speed of light