Romanovskaya is a Professor of Physics and Astronomy at Houston Community College. The author is Irina Romanovskaya (Mullins). The article is “ Migrating extraterrestrial civilizations and interstellar colonization: implications for SETI and SETA.” They could instead use free-floating planets, also known as rogue planets. The author of a new research article in the International Journal of Astrobiology says that ETCs may not need starships to escape existential threats and travel to another star system. Is there another way we, or other civilizations, could escape our doomed homes? It’s fun to think about but pure fantasy at this point. Those ships don’t need to reach anywhere near the speed of light instead, entire generations of humans would live and die on a journey to another star that takes hundreds or thousands of years. There’s lots of talk about generation starships, where humans could live for generations while en route to a distant habitable planet. It still takes us five years to get an orbiter to Jupiter at our technological stage. If humanity had to flee an existential threat in our Solar System, and if we could identify a planetary home in Alpha Centauri, it would still take us over four years to get there - if we could travel at the speed of light! Our nearest neighboring solar system is the Alpha Centauri system. Our readers are well-versed in the difficulties of interstellar travel. Could they have survived it by migrating to another star system without the use of spaceships?
It’ll expand and transform into a glowering, malevolent ball and consume and destroy Mercury, Venus, Earth, and probably Mars.Ĭan humanity survive the Sun’s red giant phase? Extraterrestrial Civilizations (ETCs) may have already faced this existential threat. In about 5 billion years, the Sun will leave the main sequence and become a red giant.
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