Our solar system is filled with moons, planets, comets, and all manner of objects in space. But amidst all that bustling of activity, there's also quite a few ships and satellites out there exploring — and this chart lets you keep track of all of them.
This chart is the latest iteration from the Planetary Society's Olaf Frohn. Frohn updates the chart once every month (and has been doing it since late-2010) with every mission currently out in our solar system, as well as the planned ones with set launch dates coming up. It's a fascinating look at just where our exploration efforts are concentrated and the ways in which we keep pushing outwards.
Image: Olaf Frohn, Planetary Society.