Currently, there is a satellite orbiting the following objects in the solar system:
Venus (Venus Express)
Earth (a whole lot of them)
Earth's moon (Lunar Reconnaissance Orbiter)
Comet 67P/Churyumov–Gerasimenko (Rosetta)
As of this Friday, that list will be reduced by one, as Rosetta makes a slow approach to a slow touchdown on its forever home, the surface of Comet 67P/Churyumov–Gerasimenko.
On the way in, much as NEAR did several years ago, they plan to take some really high resolution pictures on final approach.
Read more about it here:
Comet crash: a guide to Rosetta’s big finale
It's done a great job and produced some really tremendous pictures, lots of data, and even some surface composition data from the bouncy baby lander, Philae.
|Good night, Rosetta|