The Murchison Widefield Array , a low frequency radio telescope in Western Australia, is seen in this undated aerial view released on September 8, 2020. International Centre for Radio Astronomy Research /Curtin University/Handout via REUTERSWASHINGTON: Scientists have completed the broadest search to date for extraterrestrial civilizations by scanning roughly 10.3 million stars using a radio telescope in Australia, but have found nothing: not yet, at least.
"It is not surprising that we didn't find something. There are still so many unknown variables," astrophysicist Chenoa Tremblay of the Astronomy and Space Science division of Australia's national science agency, the Commonwealth Scientific and Industrial Research Organisation , said on Wednesday. While the search was 100 times deeper and broader than ever before, according to astrophysicist Steven Tingay of Curtin University in Australia and the International Centre for Radio Astronomy Research, it involved relatively few stars in cosmic terms."Ten million stars does seem like a lot. However, our best evaluation is that there are around 100 billion stars . So we have only looked at about 0.001per cent of our galaxy," Tremblay said.
The MWA is a precursor to another instrument, the Square Kilometre Array , that in the near future promises to boost the search for technosignatures.
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