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Small BodiesStories, updates, insights, and original analysis from The Planetary Society.
Europe goes to Mars
NASA and ESA have signed a partnership agreement to get the ExoMars Rosalind Franklin rover down to the surface of Mars, getting the mission back on track after geopolitical factors delayed it.
What DART has taught us so far
NASA's DART mission showed that if we detect a dangerous asteroid headed toward Earth, knocking it off course with a spacecraft is a potential option.
Meet the superlative exoplanets
Experience the most famous of our exoplanet friends!
Far from alone
How exoplanet discoveries reshape the prospect of alien life.
The search for Earthlike worlds
Our understanding of exoplanets grows as more tools to peer into space come online.
How to see the nova (“new star”) in Corona Borealis
A giant stellar explosion is going to be visible from Earth. Here's how to see it.
Earth’s quasi-moons, minimoons, and ghost moons
They may not be real moons, but they're worth exploring and studying.
Chang’e-6 launch: What to expect
China will attempt to return the first-ever samples from the far side of the Moon.
What are planets made of?
A look at the compositions of terrestrial planets, gas giants, and ice giants in our Solar System.
The hottest and coldest places in the Solar System
The worlds of our Solar System run the gamut of temperatures. Here are some of the hottest and coldest places we know of.
At Eclipse-O-Rama, cosmic beauty and community
On a ranch in the Texas hill country, members of The Planetary Society gathered to marvel at the 2024 total solar eclipse as a community.
Experiencing the total solar eclipse without sight
New technologies, projects, and resources aim to help people with blindness and low vision experience the eclipse.
Is Planet X/Planet Nine real?
Planet X and Planet Nine are planets that have, at one time or another, been thought to exist in our Solar System. Both were hypothesized to explain the orbital characteristics of smaller outer Solar System bodies.
Should you be worried about solar storms?
As the Sun nears solar maximum, the odds of potentially dangerous solar storms go up. What could one do to Earth?
Is the Moon shrinking?
The Moon is shrinking in both actual volume and its apparent size from Earth’s perspective. We explain how scientists know this, why it happens, and how it might affect Earth.
How to find eclipse events in your area
There are hundreds of eclipse events being held all across North America. Here's how to find one near you.
An exquisite cosmic coincidence
Why eclipses on Earth are unlike anything else in the Solar System.
Seizing upon syzygy
How scientists use total solar eclipses as opportunities to do solar science.
How to host an eclipse party
Hosting a solar eclipse-watching party is a fantastic way to share one of nature’s most awe-inspiring events with your friends and family. Here’s a guide to hosting a safe and memorable eclipse-watching party.
Become an Eclipse Explorer!
In anticipation of the total solar eclipse on April 8, 2024, The Planetary Society has partnered with the National Park Service to launch a new Eclipse Explorer Junior Ranger booklet.