Articles

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

A possible sign of life on K2-18b? Here’s what it means — and why it's just the beginning

If dimethyl-sulfide truly exists on the planet K2-18 b, it could be a huge milestone in the search for life.

Against the dying of the light

The Planetary Society is speaking out against a threat to NASA’s science programs. We need your help to prevent a dark age of exploration.

Small but mighty

Comets, moons, tiny twisters, and blueberries — they may be small, but they’re far from insignificant.

How to spot comet SWAN (C/2025 F2)

Catch this spectacular comet over the next few weeks.

Art school for scientists

From long-exposure photography to color gradients, scientists and artists can sometimes draw from the same toolbox.

It’s all coming together

When dust and rock come together, they form planets and moons. When people come together, we make a difference.

The 2025 Day of Action

On March 24, 2025, The Planetary Society’s annual Day of Action brought more people than ever before to Washington, D.C., to advocate for space.

Whole new (or newly discovered) worlds

More planets and moons are being discovered all the time. It’s up to us to explore them.

Are UFOs or UAPs real?

Something weird is happening — something that, even as an astronomer, I once struggled to explain.

The Space Advocate Newsletter, March 2025

A potential extinction-level event for NASA science.

A time for action

NASA science is under threat, and people are speaking up to defend it.

A potential extinction-level event?

An edited interview transcript between The Planetary Society’s Chief of Space Policy Casey Dreier, Director of Government Relations Jack Kiraly, and Planetary Radio host Sarah Al-Ahmed about reports that the White House is considering a 25% cut to NASA’s topline budget in 2026, including a 50% cut to the Science Mission Directorate.