The need to understand more about the intricacies of how Earth works as a system and how humanity is affecting natural processes is more urgent than ever so that appropriate policies to act on the climate crisis can be put in place. Since the successful launch of the first Earth Explorer in 2009, these missions, without exception, continue to surpass expectations. Proposed by the scientific community, they continue to demonstrate how breakthrough technology can deliver an astounding range of scientific findings about our planet.