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.
Saving the World One Asteroid at a Time
Don’t leave it up to cosmic fate; take action right now to defend our planet from dangerous impacts.
Moon, Mars and a Meteor Shower
Remembering a space pioneer and seeing a rover from a whole new perspective.
Shoemaker NEO Grant Winners Advance Their Work
We check in our last round of grant winners, who are helping to defend Earth from dangerous asteroids.
A Tiny Spacecraft Makes a Huge Leap with a Short Flight
Ingenuity flies on Mars and a NASA-SpaceX partnership paves the way for humans to get there too.
Why NASA Picked SpaceX to Land Humans on the Moon
NASA picked SpaceX's Starship to land humans on the Moon as part of the agency's Artemis program. The decision will help humans land on Mars.
A galaxy that spins in more ways than one
Listen to the sounds of the Whirlpool Galaxy and look back at our earliest picture of it.
Martian Ingenuity and Venusian imagination
Get a peek at the Martian moon and catch up on what the newest Mars explorer has been up to.
NASA Mission to Venus in 1978 May Have Detected Phosphine, a Gas Related to Life
The data come from NASA’s Pioneer Venus Multiprobe mission, which deployed a series of probes into the planet’s clouds.
The Quest for Life on Venus
Did scientists detect a signature of life in Venus' clouds? Or will the bombshell finding be proven false?
Cosmic streaks, smudges, and fuzz
See images of the cosmos that reflect fascinating features of worlds and stars, and take action to advance exploration.
Life on Mars: Your Questions Answered
The Red Planet once had liquid water on the surface, and conditions that could have supported life.
Are the Universe's Smallest Stars Promising Places for Life?
Red dwarf stars are more common than our Sun. What are the prospects for life on exoplanets that orbit them?
The far reaches of the solar system and beyond
Take a look at distant worlds, far-out views of the cosmos, and even some remote possibilities with this week’s scoop on space news and solar system history.
The Space Advocate Newsletter, January 2021
A mob at the U.S. Capitol Building. A presidential transition. NASA's final FY 2021 budget. A failed SLS test.
Seeing, feeling, and imagining the cosmos
Explore space art created by members of The Planetary Society’s community, and learn about a possible alien signal.
Aliens at Proxima Centauri? A New Radio Signal Raises the Question
Extraordinary claims require extraordinary evidence, so here are the reasons why there may or may not be aliens in our cosmic backyard.
The great conjunction! (And how it functions)
Everything you need to know about Saturn and Jupiter’s upcoming conjunction, and more from this week in space exploration.
NASA Abruptly Delays a Critical Planetary Defense Mission
A space telescope that would find thousands of potential "city-killer" size asteroids was abruptly delayed due to unspecified and unrelated funding issues within NASA's science division.
Wish upon a shooting star (or a descending asteroid sample)
Hayabusa2 brings its sample safely to Earth, and the Geminids meteor shower approaches.
Planetary Society Reacts to Loss of Arecibo Observatory Radio Telescope
Arecibo helped us explore the cosmos and our solar system, search for life, and defend Earth from potentially dangerous asteroids.