So far, the theory of the arrival of aliens must be accompanied by the presence of UFOs as a vehicle. Now, a researcher has put forward a surprising new theory that aliens could have boarded a free -floating planet to explore space.
The concept of a 'cosmic passenger' is the brainchild of Irina Romanovskaya, a professor of physics and astronomy at Houston Community College, through a study published in the International Journal of Astrobiology.
"Almost 10 years ago, when reading about the discovery of a free -floating planet, I thought of a hypothetical scenario of a free -floating planet approaching the Solar System," Romanovskaya said, as quoted by Vice, Monday (6/6/2022).
"There are no traffic lights in the galaxy. If the Solar System happens to be in the middle of the path of a free -floating planet, the planet will not stop at a red light. The planet will fly past the Solar System. The likelihood of such an event will depend on how many planets float. free in our galaxy, which at the time was still under estimate, "he continued.
Now, scientists estimate that there are tens of billions of planets floating freely as they come out of their star systems due to interactions with other objects. Planets like these are hard to find because there is no light from nearby stars to illuminate them.
Romanovskaya said the planets may still be habitable, especially if they have oceans below the surface. Planets like this are indeed thought to exist in our solar system.
Planets also have more advantages than ordinary aircraft such as UFOs that have to be built with difficulty by alien space explorers. Romanovskaya said the planet already has natural resources such as water and precious metals that could power this journey.
The planet's natural habitat can also be an effective shield to ward off radiation in outer space, and pre -existing gravity can make aliens not need to develop artificial gravity.
Romanovskaya also provides a way to find aliens who might be following an interplanetary journey like this. For example by looking for signs of unusual electromagnetic radiation around free -floating planets.
Alien species that already understand such a journey could also have left 'technosignatures' in their routes, where these traces could be followed and identified from Earth.
The newly launched James Webb telescope can also detect infrared radiation, which may be emitted by free -floating planets that have been transformed by aliens into spacecraft.
Not only alien civilizations, Romanovskaya said such a theory could also be applied by humans on Earth. If one day the sun had begun to die, man could have intercepted a passing planet and boarded it to a new life.
"Some human populations may also decide to move to other planetary systems to expand the presence of our civilization in the galaxy. Alternatively, humans could send large amounts of technology to explore stars and outer space," he concluded.