Stories, updates, insights, and original analysis from The Planetary Society.
From Earth's neighboring planets to distant moons, these are the best places to look for alien life.
Cameras on our space probes act as proxies for our own eyes, but what they see isn't necessarily what our eyes would see.
Here's a simple and safe way to observe solar eclipses that's appropriate for young children, with no eclipse glasses or other special equipment needed.
Earth's water may have been on our planet since its formation, or could have been brought here by impactors early in our planet's history. Here's a look at the leading theories about where Earth's water came from.
The Earth is thought to be about 4.54 billion years old. Learn more about how it formed, and how we know when this all happened.
If a large asteroid impacted the Moon, would it cause problems for us here on Earth?
Mars has storms of dust, while Saturn pours down ammonia rain. Here on Earth, we passed through a debris tail to get a special kind of shower.
Terminators abound this week in space, and we’ll be back to Mars if NASA gets the budget it needs.
Whether they’re dedicated to it or not, planetary missions can get beautiful and informative glimpses at distant moons. And who’s the evil twin: Venus or Earth?
The Soyuz spacecraft have been helping humans get to and from space for decades, but that’s nothing compared to the billions of years that microorganisms have been making life on Earth possible.
A tiny, Sun-loving microbe has made a very big impact on our atmosphere.
"Mercury in retrograde" is one of the most searched terms relating to the planet. Astrological interpretations aside, apparent retrograde motion is an interesting phenomenon that has to do with orbital speeds and observer perspective.
When searching for extraterrestrial life, we have to base our hunt on what we know about life on our own planet. This may seem limiting, but there's a lot we can learn from the astonishingly diverse lifeforms we have here on Earth.
Celebrate the December solstice, be thankful you’re not on Triton, and say goodbye to the InSight Mars lander.
This week we have images snapped the old-fashioned and cutting-edge ways, creative ways of thinking about exploration, and artwork that expresses the beauty of it all.
Celebrating 50 years of Apollo 17, the last crewed mission to the Moon.
With anniversaries come reflections, and there’s a lot to look back on in the history of space.
The Cosmos has so many gifts to give us, from awe-inspiring images to fascinating discoveries. We’ve got our own set of gifts to recommend too.
Artemis I is on its way to the Moon, Planetary Academy is here to inspire your kids, and LightSail 2 has come down.
Reflecting on Carl Sagan’s influence on this pale blue dot we call Earth.