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Small BodiesStories, updates, insights, and original analysis from The Planetary Society.
Don’t stare at the Sun (unless you’re SOHO)
The Solar and Heliospheric Observatory isn’t just a powerful tool for studying the Sun; it’s one of the best comet hunters in existence.
The Space Advocate Newsletter, September 2025
Who’s in charge of space policy?
An exciting discovery on Mars
NASA’s Perseverance rover has identified a potential biosignature on Mars.
NASA: Perseverance found possible biosignatures in Martian rock
NASA’s Perseverance rover has identified a potential sign of past life on Mars — not a definitive detection, but perhaps the most compelling hint yet.
Introducing Ari Koeppel, our first AAAS Policy Fellow
In a milestone that reflects our expanding advocacy and outreach presence in Washington, D.C., Ari Koeppel will join The Planetary Society as the organization's first AAAS Science & Technology Policy Fellow.
A cosmic perspective worth fighting for
NASA's science budget is under threat. Here's what that could mean to the human endeavor of exploration.
A test bed in the search for life
Updates from a Planetary Society STEP Grant-funded project.
Rethinking the atoms of life
Astrobiologists aren't just looking at other worlds to search for life; they're looking back to ancient Earth and considering alternate biochemistries.
Other Earths
Astronomers are closing in on planets that might be like our own.
The pale blue dot 35 years later
On its 35th anniversary, a reflection on what the pale blue dot means to us.
Are you ready for your close-up?
Close-ups of the Sun’s coronal loops and a tiny piece of Bennu can teach us a lot.
Rock, ice, and glass
The Solar System is full of rocky and icy bodies, but this particular galaxy is made of glass.
China eyes Saturn’s icy moon Enceladus in the hunt for habitability
China’s Deep Space Exploration Laboratory and the Shanghai Institute of Satellite Engineering have proposed an orbiter and lander mission to explore Enceladus with a key focus on the moon’s potential habitability.
All space rocks great and small
From large comets to tiny meteorites and all the asteroids in between, it’s worth finding all sizes of space rocks.
Supporting asteroid defense: The 2025 Shoemaker NEO Grant winners
Meet the latest winners of The Planetary Society's Shoemaker NEO Grant program.
Do rovers dream of electric sheep?
Rovers like Curiosity need their sleep. Meanwhile, dreams of interstellar travel are being pursued.
Eat, sleep, explore space, repeat
Astronauts may be living on the frontiers of human space exploration, but they still need to eat and sleep like the rest of us.
When space rocks get too close for comfort
Some of the best-documented encounters Earthlings have had with asteroids and meteorites.
Worlds in swirls
New research expands our understanding and observations of how planets form. And, good news in the fight for NASA funding.
Why send people back to the Moon?
What can an astronaut do on the Moon that a robot can’t?