The mystery of the silent aliens

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“Sixty years ago, space aliens were the preserve of lunatics and eccentrics, thanks to decades of sci-fi schlock, flying-saucer nonsense and Lowellian fantasies of Martian canals. Then, in 1950, came Enrico Fermi and his paradox – “Where the hell is everyone?” – and, 10 years later, the first attempts to put the search for ET on a scientific footing, courtesy of Frank Drake, who pointed a radio telescope at Tau Ceti and heard… silence.

Since then, a modestly funded programme to detect alien radio transmissions has stepped up a gear, and we have made significant astronomical discoveries pertinent to the question of alien life. Despite this, Fermi’s paradox has deepened, as the sheer size and antiquity of the universe has become increasingly apparent.

Today it is rare to meet an astronomer who doesn’t believe that the universe is teeming with life. There is a feeling in the air that light will soon be shed on some of science’s most fundamental questions: is Earth’s biosphere unique? Do other minds ponder the universe?

In April, the world will celebrate the quinquagenary of SETI, the search for extraterrestrial intelligence, so it seems a good time to take stock of the silence. Three new books tackle the issue in three different ways. One, an immensely readable investigation of the SETI enterprise (with a surprising conclusion); the second, a technical guide to what we should be looking for and how; and the third, a left-field argument that the alien question has already been answered…” (New Scientist)

2 thoughts on “The mystery of the silent aliens

  1. It’s unlikely that our primitive (and in terms of the size of the universe, extremely short-range) methods of communication would be in use by galactic or intergalactic species. Therefore failure to find radio transmissions is not surprising. Any technology for really long-range communication is going to look like magic to us. What SETI needs is a magic detector.


  2. Looking at the sorry history of our wars and our inability to get along with each other and make wise choices for the future, it’s not hard to believe that in general, the Fermi Paradox is explained by the hypothesis that “intelligent civilizations” self-destruct when they attain sufficient power to carry out their unfettered selfish desires.

    However, the Fermi Paradox goes away if you assume among the many unexplained UFO incidents, at least a few were indeed contacts with aliens civilizations.


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