Emily Stewart Lakdawalla is an American planetary geologist and former Senior Editor of The Planetary Society, contributing as both a science writer and a blogger. She has also worked as a teacher and as an environmental consultant. She has performed research work in geology, Mars topography, and science communication and education. Lakdawalla is a science advocate on various social media platforms, interacting with space professionals and enthusiasts on Facebook, Google+ and Twitter. She has appeared on such media outlets as NPR, BBC and BBC America.

The Planetary Society is an American internationally-active non-governmental nonprofit organization. It is involved in research, public outreach, and political space advocacy for engineering projects related to astronomy, planetary science, and space exploration. It was founded in 1980 by Carl Sagan, Bruce Murray, and Louis Friedman, and has about 60,000 members from more than 100 countries around the world.