We may be missing alien radio signals because they have become smeared beyond the narrowband detectors that SETI utilizes, a new study suggests.
It's a well-known fact that if humanity wishes to explore deep space and to live and work on other planets, we need to bring Earth's environment with us. This includes life support systems that leverage biological processes - aka. Bioregenerative Life Support Systems (BLSS) - but also the many species of microbes that are essential to living systems. Humans already bring microbes with them when they travel to space, in particular, to the International Space Station (ISS). These microbes become part of the natural environment, sticking to surfaces, growing in nooks and crannies, and getting into everything.
