When we explore space, we make discoveries — about never-before-seen asteroids, unusual exoplanets, and even our own planet. But to find out new things, we have to continue seeking.

The Planetary Society celebrates 45 years of advocating for space science and exploration.

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

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.

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

Catch this spectacular comet over the next few weeks.

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

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

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.

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

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

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

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.

If you're an educator who goes above and beyond for your students, this is your chance to be recognized.

Reflecting on the last strategic era, and on to the next.

How an iconic magazine gets a makeover.

A Planetary Society-funded project uses machine learning to search for intelligent alien life.

How artificial intelligence could traverse other worlds

The future of AI in space.

Before artificial intelligence, there was human ingenuity.