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Small BodiesStories, updates, insights, and original analysis from The Planetary Society.
82 NASA missions at risk under new proposal
Proposed NASA cuts would reduce NASA’s workforce by thousands and cancel over 50 space missions.
What's keeping the Artemis astronauts safe?
Though no spaceflight is without danger, Artemis II carries special risks.
Artemis II blasts off, sending humans back to the Moon
NASA's Artemis II mission has just launched people to the Moon for the first time in over 50 years.
Beyond the unknown: The coming Kuiper belt revolution
Discoveries about the worlds of the Kuiper belt could revolutionize our understanding of the Solar System and its ancient past.
Why do some planets have rings and others don't?
The giant planets of our Solar System all have rings, as do some dwarf planets and even asteroids. So why don’t Mercury, Venus, Earth, or Mars?
What is a "planetary alignment"?
What to expect when multiple planets appear in the sky together.
The Artemis II mission
Artemis II sent humans back to the Moon for the first time in over 50 years, with four astronauts on a 10-day mission around the Moon and back.
NASA has lost a spacecraft around Mars. Is MAVEN gone for good?
A pioneering spacecraft has gone missing around Mars, and NASA says the mission is probably unrecoverable.
Calendar of space events 2026
Space missions, rocket launches, and celestial events are coming our way in 2026.
Rogue worlds and the boundaries of planethood
Exploring rogue planets, how they form, and how they expand our conception of what counts as a planet.
Which stars could host alien life?
Every star in the Universe creates a different environment for the worlds around it.
The images of the Universe put at risk by proposed NASA cuts
Cosmic views put at risk by proposed NASA cuts
“We’re made of starstuff.” What does that mean?
Carl Sagan's famous quote is more than just poetic — it's true.
ESCAPADE launch: What to expect
NASA's ESCAPADE mission will send a pair of twin probes to Mars to study how the solar wind has stripped away the planet’s atmosphere, leaving behind the desolate surface we see today.
Promoted on Sunday, Fired on Monday: Inside a NASA Office’s sudden closure
As thousands leave the space agency, two ex-NASA workers give an inside account of how their office was abruptly shut down.
4,000 gone: Inside NASA’s brain drain
In exclusive interviews, ex-NASA scientists speak out on the impact of the agency's mass departures.
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.