#seti

#seti

In all the known Universe, at least as of 2026, the only world known to support life is planet Earth. Despite all we've learned about the Universe, including: the vast abundance of exoplanets, including rocky exoplanets with Earth-like temperatures, the ubiquity of heavy elements, the commonness of organic molecules that are known precursors to life, and the long cosmic timescales over which stars with such planets form, there are no known examples of worlds, other than our own, where life processes or definitive biosignatures have been detected.

Our iron giant is a deep space radio telescope, with an antenna dish measuring forty-six metres across, the largest instrument of its kind in Canada. Starting in the 1960s, the Algonquin Radio Observatory performed a number of cutting-edge scientific projects, including joining SETI's early efforts, in the 1970s and 1980s, to find signatures of alien life-spectrum emissions from water molecules, artificial transmitter signals. No luck.

Now, scientists are mulling an intriguing possibility: if aliens exist, their technology may be only marginally better than ours. And having explored their cosmic neighbourhood for a while, they simply got bored and stopped bothering, making it difficult to detect them. The scenario, described in a new paper, embraces the principle of radical mundanity, which shuns the notion of extraterrestrials zipping around the universe after harnessing physics beyond our comprehension.