Peer review is an act of serving the community. Each peer review leads to sharper, more accurate, more impactful science, and clearer communication. Reviews from independent colleagues help bring the strengths and opportunities for improvement in scientific work into focus. Each year in planetary science, new ideas and places are explored; new understanding of our planet, its neighbors, and distant exoplanets is uncovered. Ensuring that the lessons of those discoveries can lead to new breakthroughs rests on the accuracy and accessibility of science we share. In 2018, we were humbled by the 756 peer reviews from 460 individuals that JGR: Planets received. Thank you for your efforts, your insights, and your service on behalf of the planetary science community.