Stories, updates, insights, and original analysis from The Planetary Society.
The Red Planet once had liquid water on the surface, and conditions that could have supported life.
Red dwarf stars are more common than our Sun. What are the prospects for life on exoplanets that orbit them?
Explore space art created by members of The Planetary Society’s community, and learn about a possible alien signal.
Extraordinary claims require extraordinary evidence, so here are the reasons why there may or may not be aliens in our cosmic backyard.
Arecibo helped us explore the cosmos and our solar system, search for life, and defend Earth from potentially dangerous asteroids.
Learn about planetary protection for exploring other worlds and get caught up on the week’s space news.
Explore exciting news in the search for life beyond Earth, and take a trip down memory lane with our co-founder.
A Venusian biosignature, if confirmed, does not guarantee life, but it does represent a compelling argument for further exploration.
Michael L. Wong asks how our understanding of the origin of life on Earth informs our search for it elsewhere.
If you're expecting to gather with extended family on Thanksgiving, avoid the politics. Here are some conversation starters to use at the dinner table that everyone can engage in.
It's all thanks to renewed interest from NASA and a private effort to scan the skies using an array of 64 radio telescopes.
The first astrobiology session at last week's Lunar and Planetary Science Conference featured talks on a huge variety of interesting topics, and was one of my favorite sessions at the meeting.
Early Earth's atmosphere wasn't a place for humans. Yet the planet had microbial life—something we should keep in mind for exoplanets.
The GMT will characterize Earth-size exoplanets' atmospheres, looking for compounds that indicate the presence of life.
The Planetary Society has supported SETI, the search for extraterrestrial intelligence, practically since our founding in 1980. Learn the past, present, and future of SETI.
One of the reasons SETI is hard is that we don’t know exactly what we are looking for, and part of that difficulty is that we still aren’t sure of who we are. An astronomer and an anthropologist team up to explore how cultural myopia shape what we can find in the cosmos.
Two of NASA's new astronaut candidates are particularly suited to conduct scientific research on other worlds: Zena Cardman, a geobiologist, and Jessica Watkins, a geologist.
If you find a structure that looks like ancient life, can you be really sure that it is ancient life?
NASA's Cassini spacecraft sniffed out molecular hydrogen spewing from Enceladus' subsurface ocean. The discovery means Saturn's moon has all the basic ingredients needed to support life.
Earth possesses amazing biological diversity. Every corner of this planet—no matter how bizarre the place—is inhabited by microorganisms. This includes impact craters.
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