The universe has so many galaxies, stars, planets, and moons that many scientists believe an intelligent extraterrestrial race should exist within detectable range of Earth. Humans have yet to detect such alien signals, but a new study suggests we've barely scratched the surface in our search.
- Still, human searches for extraterrestrial intelligence have yet to detect any alien signal or "technosignature."
- A new study suggests this may be because we've searched just 0.00000000000000058% of a "cosmic haystack" in our hunt for an alien "needle."
- There's no guarantee that exhaustive searches would ever find aliens, though.
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