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Simple math proves how many ALIENS may be out there... a LOT more than you think!

Decades ago most people were afraid to admit that they believed in aliens that today things

have changed.

The universe is packed with 2 trillion galaxies, and anyone who believes that humans are alone

would be smug.

Recently a poll suggested that 54% of residents of the United States have confidence that

there are intelligent beings out there.

Some people might say that the optimism of those who believe is based on science fiction.

This is because no one has any concrete evidence of aliens.

However, many scientists agree that the cosmos is sprinkled with alien life and it may be

liberally sprinkled.

But is it possible to guess how close the closest alien beings are to humans?

Drake Equation Tells Us There Is Alien Life Out There

Back in 1961, an astronomer by the name of Frank Drake came up with an equation that

was simple for estimating the number of societies in the galaxy that are technically active.

This is known as the Drake equation, and it has been said to be the second famous, after

the E=mc2 of Einstein.

Anyone can look up this formula online, and they will see that it takes into account odds

there are planets that are habitable around other stars along with the chances that life

is going to arise and the probability that biology is going to evolve to produce beings

that are clever.

Without even delving into the Drake equation it is possible to use the reasoning that is

similar to work out how many alien societies there might be and how close to Earth they

are.

Recent research has revealed that one in six stars has a planet hospitable to life.

This is not one in a million, but one in six and this is the starting number that we can

take and go with.

Then some assumptions can be made and one, in particular, is if there were a million

worlds of Earth-size, what amount would ever have inhabitants are technically sophisticated?

Half Of All Planets Suitable For Life Could Have Produced Life

Life on Earth started quickly, a chemical activity that was random in 350 million trillion

gallons of ocean water spawned some molecules that could reproduce in a few hundred million

years.

With this in mind, biology does not need to be goaded too much to get started.

Therefore it is not unreasonable to work out that that around half of all planets suitable

for life are able to go ahead and produce it.

Of course, intelligence is far less certain.

Think about one in 100 biology encrusted planets having beings that can think.

Now according to Frank Drake assume that any alien life has continued to hang around for

around 10,000 years before then meeting an end.

If you do the math, it works out that about one in 100 million star systems could have

inhabitants that are technically adept.

This may be likened to the fraction of Powerball lottery tickets in the lottery.

So just how close are the closest alien lifeforms?

The average distance between the stars in our galaxy is 4.2 light years, which is the

distance to Proxima Centauri.

This means that for every cube of space with 4.2 light years on the side on average there

is one star.

Now consider a larger box that has 2,000 light years on the side, and this will have 100

million star boxes and perhaps a sophisticated civilization.

Closest Alien Life May Be One Or Two Thousand Light Years Away

This calculation is very rough and ready, but the closest alien lifeforms are perhaps

one or two thousand light years away.

This means that they are no closer than the Orion�s Belt three bright stars.

Of course, this does not mean that there aren�t aliens living farther or closer.

The order-of-magnitude indicates that they are not next door to Earth.

More than likely they do not have any incentive to pay a visit to Earth, and they may not

even know that Earth exists.

It is not possible for Earthlings to visit aliens on other planets either as even the

fastest of rockets would have to travel 20 million years just to reach other planets.

More than likely aliens do exist, and it is possible that 10,000 societies live in the

galaxy and most likely other galaxies.

However, while they will not be too close to Earth, they may be close enough to be discovered.

This is one of the main reasons why astronomers watch the sky for any radio signals that have

been launched.