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Stories, updates, insights, and original analysis from The Planetary Society.

Sharing an eclipse with kids

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.

How did Earth get its water?

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.

How old is the Earth?

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.

Storms and showers

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.

Hasta la vista, baby

Terminators abound this week in space, and we’ll be back to Mars if NASA gets the budget it needs.

What does “Mercury in retrograde” actually mean?

"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.

What the search for aliens can learn from life on Earth

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.

Capturing the Cosmos

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.

Gifts from above

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.

Launching and descending

Artemis I is on its way to the Moon, Planetary Academy is here to inspire your kids, and LightSail 2 has come down.

Two pale blue dots

Reflecting on Carl Sagan’s influence on this pale blue dot we call Earth.

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