Look up. Somewhere beyond our solar system, where it’s well below zero, ­pitch-dark, and the next-nearest star is a 400-century ride away, an electrical charge sparks a radio signal. The blip is faint, some 22 watts, no more power than a typical refrigerator bulb needs. The source is ­Voyager I. Its 12-foot antenna is calling home from the blackness. More......                                                                                               Source: Ryan Bradley- popsci.com                                                                                 November 21, 2019