Can the Moon be upside down?

When you think about how the Moon looks in the night sky, you might never have considered that it looks different to people in other parts of the world. But really, perspective is all relative.

5h

LightSail 2 Video Submission Form

Video upload

13h

A Goodbye, But Not Forever, From Emily Lakdawalla

After 19 years, Emily Lakdawalla is leaving The Planetary Society.

1d

A Planetary Society Retrospective

Look back at the remarkable achievements our members have made over the past 4 decades, alongside other space milestones and events.

4d

Your Impact: September Equinox 2020

We’ve made some big changes to planetary.org, as we continue to advance advocacy, defend Earth, and chart the future of space exploration.

4d

Could there be life on Venus?

Explore exciting news in the search for life beyond Earth, and take a trip down memory lane with our co-founder.

6d

Your Guide to Asteroids, Comets, and Other Small Worlds

These leftover planet-building materials are like time capsules that give us a peek into our origins.

2w

Night Sky Photography for Beginners

An introduction to full-sky astrophotography using a digital camera.

2w

Did Scientists Just Find Life on Venus? Here's How to Interpret the Phosphine Discovery

A Venusian biosignature, if confirmed, does not guarantee life, but it does represent a compelling argument for further exploration.

2w

What’s up (and down) in space?

Wrap your head around orientations in space, and learn the latest in space exploration news.

2w