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Small BodiesStories, updates, insights, and original analysis from The Planetary Society.
What could the Artemis IV astronauts discover on the Moon?
NASA is already planning what the crew will do on their lunar landing mission.
The Cost of a PROMISE
NASA may send an engineering copy of a Mars rover to the Moon, but at what price?
Solstices, equinoxes, and seasons
How Earth’s tilted axis causes our seasons.
'Ignition': A new series of NASA initiatives
On March 24, 2026, NASA leadership detailed new plans for the agency, involving lunar missions, Mars, and more.
What is a "planetary alignment"?
What to expect when multiple planets appear in the sky together.
The Space Advocate Newsletter, Februrary 2026
Musk fought the Moon and the Moon won.
Calendar of space events 2026
Space missions, rocket launches, and celestial events are coming our way in 2026.
“We’re made of starstuff.” What does that mean?
Carl Sagan's famous quote is more than just poetic — it's true.
The pale blue dot 35 years later
On its 35th anniversary, a reflection on what the pale blue dot means to us.
Why send people back to the Moon?
What can an astronaut do on the Moon that a robot can’t?
Capturing magic
A photographer’s guide to auroras.
Extraterrestrial lights
How other worlds experience auroras.
It's not magic; it's magnetic!
The magnetism behind spectacular phenomena.
How to spot comet SWAN (C/2025 F2)
Catch this spectacular comet over the next few weeks.
Calendar of space events 2025
Space missions, rocket launches, and celestial events are coming our way in 2025.
Tech funded by Planetary Society launches to the Moon next month
A spacecraft trying to land on the Moon will carry PlanetVac, the lunar dustbuster that could change how we explore other worlds.
A beginner’s guide to stargazing
It only takes a few basic tips to start exploring the night sky.
Connecting ancient life to other worlds
Looking to the past to guide the search for life.
How soon will Starship fly?
One rocket could decide how soon humanity returns to the Moon — and maybe one day sets foot on Mars.
How to spot the ISS
Seeing the ISS is easy and amazing stargazing.