JPL is mostly known for its Mars rover missions (such as Spirit & Opportunity and the more recent rovers that you can read about in my first blog post) and deep space missions such as Voyager and Cassini. However, JPL also contributes significantly to Earth Science missions for NASA – missions that study our planet and help us better understand how it is changing. In fact, up to 25% of JPL’s business on average is dedicated to Earth Science, and most of my career at JPL thus far has been working on satellites that orbit and monitor the Earth.