"Surprise" or "puzzling" are the most common words in news reports about bodies in the solar system. Here are recent examples that discuss the inner planets.
Long-lost Apollo data on lunar dust accumulation has been found, showing a tenfold increase over previous estimates. What does that imply about the age of the moon?
Apollo ended 50 years ago, Neil Armstrong is dead, but lunar geologists are still using the moon rocks they brought home to construct a story of the moon's "evolution".