In 2010, rocket scientists Robbie Schingler and Will Marshall set an ambitious goal for themselves: to launch an aerospace mission with the speed and agility of a Silicon Valley startup. They set up shop in their garage, left their NASA jobs, and began pursuing their vision of building small, relatively inexpensive satellites to take daily images of the earth. Today, their company Planet has a fleet of roughly 200 satellites that capture millions of pictures daily, tracking everything from forest fires and oil spills to the health of coral reefs and crops. The company now has hundreds of clients around the world, and just went public on the NYSE.