Somewhere on a distant planet, advanced alien life forms could be looking up the skies and wondering if they are alone in the Universe. Most scientists agree that such a scenario is highly plausible, but we’re still struggling to find out where exactly are those alien civilizations.
To unveil the mystery once and for all, scientists had been using the Murchison Widefield Array (MWA) from Australia to search for low-frequency radio signals across 10 million stars from the Vela region. Detecting such a signal meant that an intelligent alien is practically waving at us.
No signs of alien life
Scientists were disappointed to conclude that their search didn’t reveal any intelligent alien life form across any of the 10 million star systems.
Astronomer Chenoa Tremblay from the ICRAR (Curtin University node of the International Centre for Radio Astronomy Research), declared:
“We observed the sky around the constellation of Vela for 17 hours, looking more than 100 times broader and deeper than ever before. With this dataset, we found no technosignatures – no sign of intelligent life.”
But should the search be over if there’s no sign of intelligent aliens on so many star systems? Steven Tingay, who is a colleague of Tremblay, thinks that we shouldn’t give up hope just yet:
“And even though this was a really big study, the amount of space we looked at was the equivalent of trying to find something in Earth’s oceans, but only searching a volume of water equivalent to a large backyard swimming pool.”
Scientists believe that exoplanets existing in the ‘Goldilocks Zone’ of their star systems are common across the Universe. These planets have the potential of harboring liquid water, which is a crucial component of life as we know it on Earth.
The new research was published in the Publications of the Astronomical Society of Australia: https://www.cambridge.org/core/journals/publications-of-the-astronomical-society-of-australia/article/seti-survey-of-the-vela-region-using-the-murchison-widefield-array-orders-of-magnitude-expansion-in-search-space/C175371A2383A6A03FC038D50C4D4B16