Are we alone?
Let’s find out.
Leading the search for life beyond Earth.
The SETI Institute is a 501(c)(3) nonprofit dedicated to finding out.
REU Applications now open!
Applications are now open for the SETI Institute’s summer 2026 REU internships, offering undergraduates the chance to conduct hands-on astrobiology and astronomy research with SETI Institute scientists while exploring field sites, observatories, and professional development activities in California’s Bay Area. Application submission deadline is February 1, 2026.
SETI Institute Invites Applications for the 2026 Mino Postdoctoral Fellowship
This research program offers an exceptional opportunity for talented early-career scientists worldwide to contribute significant advances. Applications must be submitted by January 16, 2026.
Planetary Picture of the Day - Week of November 24, 2025
This week we take a look at layers -- layers in nebulae, layers in the Martian atmosphere, and layers in our own atmosphere. Plus, Europa Clipper uses its star tracker camera and catches Uranus in the field of view.
SETI AIR Newsletter - November 2025
This month’s SETI AIR profile spotlights visionary public-art leader Dorka Keehn, whose cultural influence and longtime guidance help shape the AIR program, alongside updates on upcoming exhibitions, talks, and events from AIR artists around the world.
Visitors from the Stars: Understanding Comet ATLAS Without the Hype
Our visitor offers a rare scientific opportunity. 3I/ATLAS is special not only because it’s rare, but because it’s a time capsule from another star system.
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The latest industry news, interviews, technologies, and resources.
SETI Institute announces Adrien Segal as recipient of the Planetary Futures Residency
SETI Institute tracks pulsar “twinkle” to reveal how space distorts radio signals
SETI Institute announces Adrien Segal as recipient of the Planetary Futures Residency
SETI Institute tracks pulsar “twinkle” to reveal how space distorts radio signals
What We Do
At the SETI Institute, we explore the origins of life, the search for extraterrestrial intelligence, and the mysteries of the cosmos. Through cutting-edge research, education programs, and public outreach, we strive to expand humanity's understanding of the universe.
Research
We lead scientific investigations into planetary environments, astrobiology, and the search for life beyond Earth.
Education
Our educational initiatives inspire and train the next generation of scientists, fostering curiosity and innovation.
Outreach
We engage the public with space science and discovery, making complex scientific ideas accessible and exciting for all.
Research
Featured Projects
The Allen Telescope Array (ATA)
The ATA is the first radio telescope designed from the ground up to be used for SETI searches. #ATA #Radio Astronomy #Hat Creek Radio Observatory #HCROCOSMIC
The Commensal Open-Source Multimode Interferometer Cluster (COSMIC) is a new commensal Ethernet-based digital signal processing backend and computer cluster on the VLA in New Mexico operated through the NRAO. #COSMIC #VLAUnistellar Network
Leverage your Unistellar telescope's power and join our community to observe intriguing astronomical events such as supernovae and exoplanet transits, while making a valuable contribution to research. #Unistellar #Citizen ScienceThe Allen Telescope Array (ATA)
COSMIC
Unistellar Network
How SETI Designed A Telescope To Look For Extraterrestrial Civilizations
In 2025, we invited Scott Manley for a tour of the Allen Telescope Array in Hat Creek, CA. Take an in-depth look of the facilities and research happening at the Hat Creek Radio Observatory!
Support the
SETI Institute
Scientists are getting closer in their search for life beyond earth. But with limited federal funding for the search for extraterrestrial intelligence, supporters are the reason cutting-edge scientists can keep their eyes on the sky.
