By Hamza Faisal
The hunt for alien life has a new crew member: an AI agent. Nvidia announced on October 30 that it is working with the SETI Institute and Breakthrough Listen to put agentic AI in charge of the daily search for extraterrestrial signals at the Allen Telescope Array in Northern California — and the system has already proved itself by detecting a pulsar in real time.
Researchers can now steer the array's 42 antennas, clean up the incoming radio data and run AI models over the live stream with a single natural-language request. Nvidia describes the setup as a new class of "agentic observatories": telescopes that operate themselves, directed by conversation rather than code.
Agents that steer the telescope
Nvidia's Holoscan platform processes sensor data as it arrives. Its DAQIRI library pulls terabits of sensor data per second straight into GPU memory, so observations are processed in flight instead of piling up on hard drives. CyberEther, a signal-processing framework developed at the SETI Institute, does the maths with Nvidia's CUDA-X libraries, including cuFFT and cuBLAS.
The agent harness is Nexus, a web-based observatory orchestrator. It gives the agents one view of the instrument's state, compute resources and pipelines, and lets researchers monitor packet loss, read live spectrograms and rewrite signal-processing blocks — all by prompting in plain English. An agent can steer an antenna, calibrate and focus the instrument for a clean signal, catch and fix data errors, and plot the result.
The pipeline runs on Nvidia RTX PRO 6000 Blackwell GPUs and can handle up to 2.4 terabits of data per second, with inference running on site, next to the instrument. Nvidia says the agents compress work that would take humans weeks or years into hours, though the 2.4-terabit figure is stated capacity, not independently verified sustained performance.
A pulsar, found in real time
The pipeline has already proved itself on a known target, achieving the first real-time AI detection of a pulsar — a rapidly spinning stellar remnant that pulses like a cosmic lighthouse — in the Crab Nebula. It builds on earlier work: in April 2025 the array's 42 synchronised antennas detected radio pulses from the Crab Nebula, and in November 2025 the team reported an AI system that processed some radio astronomy data 600 times faster than a conventional method.
None of that is a detection of alien life, and Nvidia does not claim otherwise. A pulsar is a known astronomical object, and the search for extraterrestrial intelligence has run since 1960 without a confirmed signal. Finding something unusual is the easy part; proving it came from extraterrestrial technology is far harder — and researchers still type in the commands, so the system is not running itself.
Listening for alien AI
The team is now evaluating open models, including Nvidia's Nemotron, for cases where keeping data local and getting answers fast matters most — and for observatories that might one day run offline on the far side of the moon. If alien civilisations exist, they could be billions of years older than humanity, and their technology might have more in common with AI than with us.
"As our new agentic observatories reach out into the universe, what they find may have much more in common with themselves than with the humans who created them," said Andrew Siemion, the SETI Institute's chair for SETI and principal investigator of Breakthrough Listen. "But this isn't something to fear. Rather, it's a breakthrough in translation."
For now, the translation runs one way. Whether anything ever answers back is still an open question.
