What Is the Wow Signal? The 1977 Space Mystery
Ohio State's Big Ear, a red-ink note, and why astronomers now suspect a hydrogen cloud.
16 Oct 20262 min read
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seti
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Ohio State's Big Ear, a red-ink note, and why astronomers now suspect a hydrogen cloud.
A 1964 yardstick for alien and future civilisations, and our score.
Enrico Fermi's lunchtime question and why it still has no answer.