To know if there are aliens, we need to ask the right questions

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Are We Alone in the Universe?

Panel from “Are we alone?”, a comic written by me with art by Maki Naro. [Credit: Maki Naro (art)/moi (words)]

How can we know if life exists elsewhere in the cosmos? To answer that question, we have to place Earth — and Earth life — in the context of other worlds in the Solar System and beyond. In my latest comic for The Nib with Maki Naro, we look at the science of planetary chemistry and the conditions of habitability as we know them, with the help of Johns Hopkins astrochemist Sarah Hörst and American Astronomical Society Public Policy Fellow Ashlee Wilkins.

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