[jawher]

While I share your enthusiasm, I'd like to point out some problems with "Sending rovers to all the planets": 4 of them are gaseous giants, literally no solid ground to land on. Venus is a no go too with its crushing atmospheric pressure, sulfuric acid clouds and 400+ c° temperatures.

[yaix]

Where there's a problem, there's at least one solution. I have no idea how to building a bot that can run science experiments in 400+ °C sulfuric acid clouds, but I bet its possible.