Rosetta did not fail. Rosetta achieved all its goals, and then some. Philae's landing failed, but they actually got quite a fair amount of data from it, too. T

Rosetta did not fail. Rosetta achieved all its goals, and then some. Philae's landing failed, but they actually got quite a fair amount of data from it, too. This year, OSIRIS-REx is going to visit asteroid Bennu[0], and the exciting thing about it is that it's a sample return mission, i.e. the probe is going to head back & re-enter. RDV is in June/July, and touch down in December IIRC. Probes visiting "other worlds" is kind of difficult, but it has been done, even in extreme cases, such as Venera (Venus) and Huygens (Titan) — if you don't know the pictures from these, you should really look them up. [0] https://www.asteroidmission.org/ https://www.asteroidmission.org/