This means that civilization could potentially colonize the whole galaxy in a mere couple of millions of years. According to mathematicians Duncan Forgan and Arwen Nicholson from Edinburgh University, self-replicating spacecraft traveling at one-tenth of the speed of light - admittedly a quick speed - could traverse the entire Milky Way in a mere 10 million years.Just look at how our world has changed in the past 100 years alone. Millions of years of technological progress mean that an intelligent species should have the capability to travel to distant stars and even other galaxies.Considering intelligent life appeared on one, it’s reasonable to consider there should be at least some other kind of intelligent life elsewhere in the galaxy. It’s believed there are between 100 and 400 billion planets in the Milky Way.
There’s nothing special about our sun – it’s young, medium-sized and similar to billions of other stars in our galaxy. The question is a valid one when considering: This thought comes as a consolation, so we might not be the only ones drifting through the frightening darkness of outer space.īut if it’s true that we’re not that special after all, where is everybody else? Enrico Fermi, the creator of the world’s first nuclear reactor, thought about this long and hard, and his correspondence with fellow scientists on the subject has remained known in history as the ‘Fermi Paradox’ - the notion that there is a virtually limitless number of stars, but nevertheless you don’t see any life floating around besides us. But since there are countless stars in the Milky Way, and countless galaxies in the universe, there must be other civilizations out there. For instance, one new study concludes that intelligent life may have appeared several times in the Milky Way, however, the vast majority of these civilizations have wiped themselves out already.Įver since people first realized we are all living on a giant rock orbiting one of many stars, a heartbreaking thought must have crept the mind: we’re not that special after all. 
There are many theories that attempt to explain the utter lack of, well, alien signals.
Are there other intelligent lifeforms in the universe besides humans capable of founding a civilization? That’s the million-dollar question that people of all walks of life have, to their best of their ability, attempt to answer.
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