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Survey finds no detectable alien radio signals across 10 million stars

Posted On: 8 Sep 2020   |   Posted By: Astronomy Now

Survey finds no detectable alien radio signals across 10 million stars

Dipole antennas making up the Murchison Widefield Array in Australia. Image: Dragonfly Media
Astronomers using the Murchison Widefield Array radio telescope in Australia surveyed a patch of sky around the constellation Vela known to include at least 10 million stars, on the lookout for radio emissions that could indicate the presence of one or more technological civilisations.
The result?
“We found no technosignatures - no sign of intelligent life,” said Chenoa Tremblay, a researcher with Australia's Commonwealth Scientific and Industrial Research Organisation, or CSIRO.
Tremblay and Steven Tingay, from the Curtin University node of the International Centre for Radio Astronomy Research, or ICRAR, used the MWA to observe the sky around Vela for 17 hours, a survey they said was more than 100 times broader and deeper than any previous study.
The MWA's wide field of view allowed the researchers to observe millions of stars at the same time, looking for powerful emissions at frequencies similar to FM radio.
Even...

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