🔭 SETI@home: 21 years of collective search for extraterrestrial life — and 100 signals worth a closer look.
For 21 years (1999–2020), millions of volunteers loaned their computers to UC Berkeley to analyze radio signals captured by the Arecibo Observatory. The result: 12 billion detections, eventually narrowed down to:
🔬 ~1 million “candidate” signals 🎯 And finally 100 signals worth a second look
China’s FAST telescope is now pointed at those 100 targets. While researchers don’t expect to confirm ET, the project left key lessons:
- 📡 Radio frequency interference (from satellites, TV and even microwaves) is the biggest obstacle
- 📊 Narrow-band signal searches remain the primary detection strategy
- 💻 Distributed volunteer computing was an unprecedented computational success
💡 Explanation in a nutshell#
SETI@home was like distributing a 12-billion-piece puzzle among millions of people worldwide. Each person analyzed a small fragment of radio data from space, looking for unusual patterns that could indicate an advanced civilization. After 21 years, scientists assembled all the pieces and found 100 that remain unexplained.
More information at the link 👇
