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.
Asteroids vs comets vs meteorites/meteoroids/meteors
A handy guide to help tease apart the differences between asteroids, comets, meteors, meteorites, and meteoroids. e
OSIRIS-REx sample return: What to expect
The spacecraft will drop off its precious samples of asteroid Bennu on Sept. 24, 2023.
Vladimir Benishek and the mystique of asteroid research
The Planetary Society Shoemaker NEO Grant winner learned from his mother and grandfather, while also forging his own path.
Five asteroid deflection techniques to save the Earth
Kinetic impactor or nuclear blast? Here are some ways to defend our planet from a dangerous asteroid.
Never let a rock sneak up on you
Finding asteroids before they hit Earth not only protects us from harm, it can also yield beautiful photos.
New wonders to behold
New stars are being born, new missions are being conceived, and new discoveries are being made all the time.
Updates from our Shoemaker NEO Grant winners
Brief updates on what the latest Shoemaker NEO grant winners have been working on.
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.
Planetary Society Grant Winner Discovers Large Near-Earth Asteroid
The kilometer-wide object won't hit Earth, but would cause global-scale devastation if it did.
How the European Space Agency Does Planetary Defense
Defending the planet from the hazard of potential asteroid impacts requires investments from the whole world. In Europe, the European Space Agency (ESA) and the European Union both support work to understand and mitigate the threats from near-Earth objects.
How NASA's Planetary Defense Budget Grew By More Than 4000% in 10 years
NASA used to spend more on travel for its employees at headquarters than it did on finding dangerous near-Earth asteroids. Now it’s building asteroid-hunting space telescopes. What changed?
The State of Planetary Defense
Vishnu Reddy delivers a sober but hopeful report on our understanding of near-Earth objects, their dangers, and our readiness.
The September Equinox 2019 Issue of The Planetary Report Is Out!
A new issue of The Planetary Report brings you our pride in the success of LightSail 2 and our gratitude to our members for making it happen. Plus Venus science from Akatsuki and Venus Express, and the status of planetary defense.
Here's How the Large Synoptic Survey Telescope will Revolutionize Small-Body Science
The LSST is expected to increase the number of known small bodies by more than a factor of 10.
What to expect when Hayabusa2 collects a sample from Ryugu
More than 4 years after launch and a half year surveying asteroid Ryugu, Japan's Hayabusa2 spacecraft is ready for sample collection.
Flying By Home
Vicky Hamilton explores how OSIRIS-REx used its Earth flyby to test instruments on the way to asteroid Bennu.
News brief: OSIRIS-REx finds water on Bennu
OSIRIS-REx team members held a press briefing today at the 2018 American Geophysical Union meeting, and announced that the mission has already found water on asteroid Bennu.
Planetary Society asteroid hunters help find rare type of double asteroid
A global team of astronomers has found a rare type of asteroid, where two equal-mass objects circle each other in a never-ending dance as they hurtle through the solar system.
Announcing the 2018 Shoemaker NEO Grant Winners
Seven very advanced amateur astronomers will help find, track, and characterize near Earth asteroids.
Hayabusa2 has detected Ryugu!
In a milestone for the mission, JAXA's Hayabusa2 sample return spacecraft has sighted its destination, asteroid Ryugu.