> Ditto. But not sparky stuff. I'd be measuring the solar wind and zodiacal light, and taking astronomical observations in ultraviolet. Nearly missed a unique opportunity there. Astronomy has a huge blind spot - daytime. The blind spot affects space telescopes in orbit around the Earth and Moon as well as on the surface on the Earth. On a manned trip to the planets we could see behind the Sun to: 1) Track semi-regular variable stars like Betelgeuse. 2) Observe novas and supernovas. 3) Observe comets and near-earth asteroids. It'd be a shame if we missed a deadly comet or supernova because the Sun was in the way, wouldn't it? That's what I'd be looking at the whole journey.