1. If you were planning the Messenger mission to Mercury, what features and observations would be of particular interest to you and why? 2. Suppose someone told you that the Viking mission failed to...

1. If you were planning the Messenger mission to Mercury, what features and observations would be of particular interest to you and why?

2. Suppose someone told you that the Viking mission failed to detect life on Mars simply because the tests were designed to detect terrestrial life-forms not Martian lifeforms. How would you respond?