View Full Version : Astronomy Without A Telescope – Solar Or RTG?

2010-Oct-09, 08:50 PM
It used to be the case that if you wanted to send a spacecraft mission out past the asteroid belt, you’d need a chunk of plutonium-238 to generate electric power – like for Pioneers 10 and 11, Voyagers 1 and 2, Galileo, Cassini, even Ulysses which just did a big loop out and back to [...]

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