Stories, updates, insights, and original analysis from The Planetary Society.
Extraordinary claims require extraordinary evidence, so here are the reasons why there may or may not be aliens in our cosmic backyard.
Arecibo helped us explore the cosmos and our solar system, search for life, and defend Earth from potentially dangerous asteroids.
Catch up on the week’s space news and consider planetary atmospheres from a few thought-provoking perspectives.
All the wonders that the cosmos offered up this week, plus news about NASA’s leadership and an exciting launch.
Even Sagan would be amazed by multitudes we now know our cosmos may hold. Learn more, plus get your scoop on the week’s space news.
From dust devils and craters on the Martian surface to spots on the Sun, we’re taking a look at everything new and exciting in space science and exploration this week.
Everything you need to know about two missions en route to Mars and another gearing up for launch, plus the rest of the week’s space news.
Dive into Mars mania and catch up on this week’s space exploration updates.
A group of researchers, backed by NASA funding, wants to use solar sails and the Sun's gravity to capture an image of an exoplanet so sharp we can see continents, oceans, and clouds.
Mark Marley explains what planetary scientists mean when they say the word
A GREAT QUEST is underway to discover Earthsize worlds in their stars’ habitable zones. Along the way, astronomers have been surprised to learn that the most typical size of planet in our galaxy is one with no counterpart in our own solar system.
NASA's Kepler space telescope helped us find our place in the cosmos.
NASA and the National Science Foundation are teaming up to observe exoplanets discovered by Kepler and TESS.
One year ago, Franck Marchis wrote an article about the remarkable discovery of the TRAPPIST-1 system. Here's an update.
Early Earth's atmosphere wasn't a place for humans. Yet the planet had microbial life—something we should keep in mind for exoplanets.
And it's only 11 light-years away.
Starshade is a proposed flower-shaped spacecraft that can create an artificial eclipse, allowing space telescopes to spot planets orbiting distant stars.
Scientists have found seven, Earth-size planets orbiting a star just 40 light years away. Three lie in the habitable zone and could have water on their surfaces.
At this year’s Division for Planetary Sciences/European Planetary Science Congress meeting, the Exoplanet Dynamics session was packed full of talks on tightly-packed multi-planet systems and their instabilities.
What began as a tantalizing rumor has just become an astonishing fact. Today a group of thirty-one scientists announced the discovery of a terrestrial exoplanet orbiting Proxima Centauri. The discovery of this planet, Proxima Centauri b, is a huge breakthrough not just for astronomers but for all of us. Here’s why.