Are we searching for life in the right place? A recent study suggests our own universe might not be suitable for star formation, making the emergence of alien civilizations unlikely. Researchers propose that parallel universes within the multiverse may offer better chances.
Not all aliens need planets to survive. Free-floating colonies could thrive in space with protective shells and efficient greenhouse effects. NASA physicist Alan Stern believes subsurface oceans beneath icy exoplanets may provide stable conditions for life, as seen in Missions like Europa Clipper.
Some scientists think alien civilizations might be advanced machines rather than biological beings. Futurist Seth Shostak posits that machine-led societies could thrive in galaxies with high energy levels. However, the possibility of misinterpreting signs of alien life remains, due to human limitations in perception.
Theoretical physicist Alexander Berezin warns that interstellar travel could harm other lifeforms during expansion, while astrophysicist Adam Frank’s models show that climate disasters could trigger catastrophic events. Even with renewable energy, civilizations may face extinction due to waste heat buildup.
Early planetary instability and dark energy’s accelerating expansion of the universe also pose challenges for alien life. A study suggests that cosmic conditions might not align, leaving the universe void of visible intelligent life during humanity’s observational window.
Source: https://www.businesstoday.in/visualstories/news/humans-have-killed-all-aliens-strange-theories-on-why-we-have-found-no-life-beyond-earth-191924-05-12-2024