This poster was created by Pop Chart Lab to trace "the trajectories of every orbiter, lander, rover, flyby, and impactor to ever slip the surly bonds of Earth’s orbit and successfully complete its mission." A great deal of work was done on this chart and it's worth seeing.
The inner solar system resembles a tangled web because it has been extensively explored.
We can see how many missions to Jupiter and Saturn have focused on exploring their moons.
The great distances of Uranus, Neptune, and Pluto have made it difficult to send more than just a few missions to them.
Now we take a look at all the spacecraft we have sent into the cosmos.