When we think about asteroids that could threaten Earth, we often imagine massive, city-sized rocks hurtling through space. But what if the real danger comes from much smaller, barely detectable ones?

Stunning stellar explosions occur every second across the cosmos – some observable, most too distant to ever know, all of ...

Jun 14, 2025, 8:00 AM - 10:00 PM ...

For decades, many scientists have relied on the "hard steps" model to suggest that intelligent life is rare — the improbable ...

This spring, skywatchers have been treated to the captivating and unpredictable display of a new comet, called C/2025 F2 ...

Madhusudhan et al. just reported ~3 sigma detection of dimethyl sulfide (DMS) or dimethyl disulfide (DMDS) in the atmosphere of K2-18 b in the Astrophysical Journal Letters. The claim is intriguing, ...

Girls grades K-12 can earn their Space Science badges thanks to “ Reaching for the Stars: NASA Science for Girl Scouts” supported by NASA Science under ...

April 16, 2025, Mountain View, CA -- Why do comets and their meteoroid streams weave in and out of Earth's orbit and their orbits disperse over time? In a paper published online in the journal Icarus ...

A new hypothesis from SETI Institute scientist Dr. Janice Bishop and Dr. Melissa Lane from Fibernetics in Pennsylvania could explain how early Mars may have had water on its surface, similar to Earth, ...

In 1974, the most powerful broadcast ever deliberately beamed into space was made from Puerto Rico. The broadcast formed part of the ceremonies held to mark a major upgrade to the Arecibo Radio ...

The Allen Telescope Array (ATA) is the first radio telescope to be designed from the ground up to be used for SETI searches.Until its construction, all radio SETI efforts were dependent on the ...

The Carl Sagan Center for Research (CSC) brings together all the scientific research at the SETI Institute. Home to more than 75 scientists, the CSC conducts grant-funded research across nearly all ...