In the latest breakthrough, scientists have revealed that aliens are potentially shaped by the same processes and mechanisms that shaped humans, such as natural selection.
Scientists of Oxford University has published a paper saying that evolutionary theory can help describe aliens and their behavior in the International Journal of Astrobiology.
According to the research, aliens are potentially impacted by natural selection, just like Human Being, making them evolve to be stronger and more adaptable.
"A fundamental task for astrobiologists (those who study life in the cosmos) is thinking about what extra-terrestrial life might be like," said Sam Levin, a researcher in Oxford's Department of Zoology.
"But making predictions about aliens is hard. We only have one example of life - life on Earth to extrapolate from.
"Past approaches in the field of astrobiology have been largely mechanistic, taking what we see on Earth, and what we know about chemistry, geology, and physics to make predictions about aliens," said Levin.
In the new study, researchers offer an alternative approach, which is to use evolutionary theory to make predictions that are independent of Earth's details.
"This is a useful approach because theoretical predictions will apply to aliens that are silicon-based, do not have DNA, and breathe nitrogen, for example," Levin said.
In the research, scientists have used new method, offer an alternative approach in which they used evolutionary theory to make predictions that are independent of earth's details.
According to the Levin, this method is more useful as theoretical predictions are silicon-based, do not have DNA, and breathe nitrogen.