Planetary Society

What will it take to send humans deeper into space and do it together? In this week's episode, recorded at the 2025 Humans to the Moon and Mars Summit, we share two powerful conversations on the science and diplomacy shaping our future beyond Earth. planetary.org/planetary-radi…

Today is Asteroid Day — a reminder that 117 years ago, humanity got lucky. The Tunguska Event took place on the morning of June 30, 1908, when an asteroid roughly 50 to 80 meters wide exploded above Tunguska, Siberia, wiping out 2,000 square kilometers of forest. Asteroids are…

BASILISK and Science!

We are teaming up with The Planetary Society! @exploreplanets Co-founded by Carl Sagan and led by @BillNye, TPS empowers the world’s citizens to advance space science and exploration. We are proud to bring their mission to the millions of global esports fans. Let's go!

For the first time, astronomers have caught the birth of a brand-new solar system! Using both the ALMA telescope and JWST, scientists captured a stunning image of HOPS-315, a baby star about 1,300 light-years away that is just beginning to form planets. It is essentially a…

As New Horizons marks its 10-year anniversary of the historic Pluto flyby, it’s a bittersweet milestone. The mission, which made headlines globally now faces the threat of being shut down midflight due to the newly proposed NASA budget cuts. Learn about the Pluto flyby and the…

What’s really at stake if NASA’s science budget gets slashed and entire science missions are canceled? We asked the scientists leading those missions, and their stories reveal what we all stand to lose. Here’s what they told us: planetary.org/articles/scien…

This has never happened before. Every living former NASA Science Chief united to sign a joint letter to Congress, urging them to reject a devastating 47% cut to NASA’s science budget. Led by our board member and former NASA Associate Administrator of Science John Grunsfeld, we…

ʻOumuamua 2.0? A newly discovered space object is speeding into the inner Solar System on a one-time path, likely just passing through and never coming back. If confirmed, it would be only the third interstellar object ever spotted flying through our neighborhood. The first…

When life gives you lemons, you save @NASA space science. 🍋 Murrieta, California, three young boys—Jacob, his brother Tommy, and their friend Thomas—set up a lemonade stand. But this wasn’t your average summer hustle for extra cash. This was a mission: to support The Planetary…

Want to squeeze in some stargazing between the fireworks this week? On July 4th, Mercury reaches its greatest elongation—meaning it’ll be the highest above the horizon for this viewing period, making it the best time to spot it. To find Mercury look to the western evening sky:…

You’ve heard of “Category 5” for hurricanes—but is there a system like that for asteroids? There is. It’s called the Torino Scale. Learn what it means and how it works ⬇️ planetary.org/articles/how-a…

Today is Asteroid Day — marking the anniversary of the 1908 Tunguska Event, when an asteroid leveled 2,000 square kilometers of forest in Russia. It’s a powerful reminder of the threat near-Earth objects still pose. Your gift today fuels our Shoemaker NEO Grant Program, where we…

Alicia Brown from @csf_space and Brittany Webster from @theAGU join @PlanRad to break down NASA’s FY 2026 budget proposal, which aims to cut science by 47%, and drop staffing levels not seen since 1960. planetary.org/planetary-radi…

Looking for data to support your meeting with your Rep or Senators? Check out this interactive dashboard we created! It shows how NASA’s science investments benefit your state and 77% of all congressional districts. Use it alongside your talking points to make your case!…