Voyager 1 took this photo of Jupiter and two of its satellites (Io, left, and Europa) on Feb. 13, 1979. Io is about 220,000 miles above Jupiter's Great Red Spot; Europa is about 375,000 miles ...

The probe autonomously made the transmitter swap when its computer ... 1 during the transmitter issue was lost. “However, the science that Voyager is doing now is really about the big picture ...