Scientists have been trying to find evidence of alien life for many years now, with little to no avail. Humans, in general, are obsessed with one predominant question: Are we actually alone in the Universe?
Two astronomers have made it their mission to answer this question and their research even suggests that our approach so far has been wrong.
Rene Heller, an astronomer at the Max Planck Institute for Solar Systems Research in Germany, and Ralph Pudritz, astronomer at McMaster University in Hamilton, Canada, believe that if we are to find alien life, the best approach would be to focus our efforts on those particular planets and parts of the Universe that can actually see us.
The two scientists published their thoughts on this issue in the scientific journal Astrobiology. They claim that instead of actively searching for alien civilizations, we should try to be prepared in case they want to contact us first.
Heller and Pudritz believe that our best chance of spotting a signal from intelligent extraterrestrials is to assume that they are applying similar techniques to track us down.
Scientists are usually concentrating their time and attention on studying celestial objects that are too far away to even see us directly. According to the two astronomers, what they should do instead is track their shadows when they travel in front of their own suns.
Researchers have already discovered a few locations in the Universe where alien life might exist and they were able to achieve this by estimating the average stellar temperatures and illumination on those particular surfaces.
But according to the two astronomers, this approach might not be the best one. Instead of trying to identify alien life, we should ask ourselves: What happens if alien observers locate planet Earth while it transits the Sun?
If that is the case, then we should focus our attention on our planet’s “transit zone”, which is the space from which our planet can be detected, when it makes its way in front of the Sun.
According to Heller, finding out if aliens are using the same techniques we are is a near impossibility. However, if they are indeed trying to locate us, they have to follow the same physical principles as us and from this perspective, our planet’s solar transit is one obvious method to do that.
The two astronomers go on even further, by saying that if such extraterrestrial observers do exist, they might have identified our planet as a habitable environment a long time ago and we might even be receiving their broadcasts right now.
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