Explore Worlds
Find Life
Defend Earth
All
All
Sun
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
Small BodiesStories, updates, insights, and original analysis from The Planetary Society.
Our best proof of life on Mars yet? A deep dive into Cheyava Falls
A strange rock on Mars is different from anything we’ve seen before in the search for life.
What is comet 3I/ATLAS?
A roundup of key facts and surprising discoveries about the third known interstellar object.
Where do 3I/ATLAS and other interstellar visitors come from?
Interstellar interlopers like 'Oumuamua and 3I/ATLAS could be our best bet at exploring other stars.
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.
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.
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.
Why send people back to the Moon?
What can an astronaut do on the Moon that a robot can’t?
Ten years after Pluto, New Horizons faces a new threat
The newly proposed budget for NASA would shut down the spacecraft midflight.
Scientists behind threatened NASA missions explain what’s at stake
Here is what they have to say, in their own words.
How astronomers rank dangerous asteroids (and what that means for you)
A breakdown of the Torino scale, designed to give a quick sense of how worried you should be about an asteroid or comet.
Needles in the haystack
How advanced amateurs defend Earth from asteroids.
Extraterrestrial lights
How other worlds experience auroras.
New NASA budget would shut down 41 space missions
Proposed NASA cuts would cancel dozens of space missions — including spacecraft already paid for, launched, and making discoveries.
At the Cosmic Shores Gala, celebration, connection, and hope for the future
The Planetary Society celebrates 45 years of advocating for space science and exploration.
A possible sign of life on K2-18b? Here’s what it means — and why it's just the beginning
If dimethyl-sulfide truly exists on the planet K2-18 b, it could be a huge milestone in the search for life.
How to spot comet SWAN (C/2025 F2)
Catch this spectacular comet over the next few weeks.
Are UFOs or UAPs real?
Something weird is happening — something that, even as an astronomer, I once struggled to explain.
Exploration on autopilot
The future of AI in space.
How The Planetary Society's grassroots movement shapes the future of space
With wide-reaching support, we're speaking up for space missions and sharing our love of space.
Calendar of space events 2025
Space missions, rocket launches, and celestial events are coming our way in 2025.