Eight Scientific Facts About Aliens

Are there something out there? Or are we the only living creature in the Universe. So far scientists have found no evidence of alien life forms.


Scientists do not know whether there are any aliens but they have been searching for life on other planets for thousands of years. From the beginning ideas about aliens were linked to religious myths, and people regarded gods, angels, spirits, and demons as real. Democritus, a Greek philosopher, argued that all forms of matter consists of atoms and these tiny particle could be linked together to form plants and animals not only on Earth but also on other planets.

The German mathematician and astronomer Johannes Kepler described in his book Somnium (The Dream, written around 1611) a type of reptilian creatures living on the Moon. Sunvolvans lived on the side facing the sun, and Privolvans lived on the dark side.


Today, scientists are searching for life on other planets by trying to catch radio signals. In 1960, Francis Drake, steered a giant 26-metre dish towards a star Epsilon Eridani, and the antenna picked up an artificial signal. The signal turned out to be produced by secret military radar but this was the beginning of the search for radio signals sent by aliens.

The word SETI stands for Search for Extraterrestrial Intelligence, and it is an international research programme that seeks evidence of life in the universe.



The chance of finding other life is calculated by using the Drake equation. There are billions of Earth-like planets and many people believe that there are many planets which have intelligent life. Scientists do not know how likely it is that life emerges, and it is possible that life on Earth is unique. It is also difficult to know how likely it is that intelligent life develops.

In order for aliens to send a signal they have to develop some sort of intelligence. Scientists believe that it is unlikely to find intelligent life in our solar system. But there might be life on other planets in our solar systems, and this life might look completely different from life on Earth.


After years of searching for a radio signal, no message from another planet has been received. Scientists have found planets beyond our solar system, and many scientists believe that given a suitable environment and sufficient time, it is possible that life will develop on other planets.

Humans have sent messages to try to contact aliens. Photos, drawings, and text messages have been sent at the planet Gleise. This active SETI is also called METI (Messaging to Extraterrestrial Intelligence) and some scientists have criticised this active way of looking for other life since the location of Earth could be revealed to aliens.

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19 Responses to “Eight Scientific Facts About Aliens”
  1. Anuradha Ramkumar Says...

    On May 11, 2010 at 12:47 am

    Great article. You have really done a good amount of research in this subject.

  2. Court Eliot Says...

    On May 20, 2010 at 8:10 am

    I agree! Very good research! It’s so interesting to me that scientists claim to have no evidence yet they keep looking.

  3. Jabba Says...

    On June 2, 2010 at 12:44 am

    A. Jom, I applaud your efforts. I think you should continue to write and have discussions about such topics.

    The other comments here prompted me to reply myself.

    I think most scientists think that aliens exist, simply because there are trillions upon trillions of galaxies containing an untold number of planets. The mentioned “Drake’s Equation” helps to display that while it’s unlikely for any one planet to have life, it’s likely that some do. It’s kind of like the lottery – the individual odds are horrible, but there are so many playing that there are winners.

    @C.E. Watson: We listen because we’re a curious race, and we want to know what we’ll hear. Just like we build bigger telescopes, because we want to know what we’ll see. Each time we build a new telescope to look further, the universe looks bigger and bigger to us, and some humans get excited thinking that we’re probably not alone.

    Now, we must separate this “we believe other intelligent life probably exists” from “we believe that life has the ability to communicate with us” or, far far more unlikely, “they have the ability to make it here.” We’ll have to learn something that will turn us all on our ear about the universe and speed of light, before it’s popular to think otherwise.

    There are problems with how we are “listening” for aliens. Keep in mind that if any extra terrestrials sent transmissions in the ways that we’re listening, we would be listening to transmissions sent thousands to millions of years ago.

    Imagine if we’ve already sent a transmission that is heard in 10,000 years, and the receiving species could travel the speed of light (which we think is impossible). Then they would travel towards us for 10,000 years at the speed of light to get here (think if how hard that would be – lifespans, power requirements, etc). So, 20,000 years will have passed since our transmission was sent. See the problems?

    Though, it’s fun to think about the fact that we’re pretty noisy – radio transmissions wise. Maybe a long time from now, someone on another planet will hear our transmissions and wonder who we were. We’ll probably be long gone, if and when they’re ever heard.

    Or, with an optimistic hat on, perhaps we’ll change how we’re listening. Maybe secrets will be revealed to us that allow us to listen in a new way, rather than radio waves, and we’ll yet hear extra terrestrial chatter.

    So, the final note: there’s a great big difference between believing that life probably exists on other planets (or, further, intelligent life exists on other planets), and believing that they’ve ever visited here, can visit here, or even that their transmissions have reached our planet.

  4. kingstonenathan Says...

    On June 8, 2010 at 4:29 am

    i agree

  5. silentbob14 Says...

    On June 12, 2010 at 5:35 am

    Good one ;]

  6. amit Says...

    On June 23, 2010 at 1:59 pm

    it was really a great article and helped me in getting some points for my project.

  7. Annika laloraya Says...

    On August 21, 2010 at 10:51 am

    hmmmmmmm!!pretty coool and good shared points!!

  8. Dr. Arshaj G. Says...

    On November 5, 2010 at 1:43 am

    Amazing article…

  9. chuchi Says...

    On November 9, 2010 at 9:40 am


  10. SURINDER Says...

    On November 11, 2010 at 12:52 pm

    it was not very useful for me but i am researching on how to make your girlfried happy

  11. vijju Says...

    On December 6, 2010 at 10:36 am

    soo dumb man…!

  12. Aaron Says...

    On December 19, 2010 at 7:38 am

    I think its more than possible that not just a race but an vast entire group of races all around us know of us but our conflicts on our own humanity are so selfish our lies are beyond any intervention even a hello if you like is out of the question why make contact with a planet of beings (Humans) that wont trust one another we must evolove to a much higher level of harmony like the Pyramids of Giza to build ourselves into something with a very high harmonic balance its perfection that is evading us all like a disease a contagious type of mental social political agenda disorder all mans ideas conflict against the next one i think a race that blows its own land to pieces is not a race id like to be involved with we are WMD’s to any highly intelligent beings we as a majority are simply not worth the risk too many unresolved
    issues they can be fixed an invitation is a 2 party agreement Earth is not a single party we are so Devided when it all stops we will get our Chance (no wepons no hunger no killing no lies) only then will we become 1 part of many to share the big beautiful free for all infinite Universes

  13. chris Says...

    On May 18, 2011 at 8:35 am


  14. fsfdfdf Says...

    On October 11, 2011 at 6:12 pm

    hi my name is bob and i work in a button factory i have a mom and a dad and a family;)

  15. dggjhluouk Says...

    On January 16, 2012 at 8:22 pm


  16. 8r[; Says...

    On May 7, 2012 at 5:58 pm

    awsome dude

  17. amy choke tht hoe Says...

    On May 7, 2012 at 6:00 pm

    yo mama so fat she couldn’t fit in those 3 planets

  18. 8r[; Says...

    On May 7, 2012 at 6:02 pm

    yea that whts up

  19. Ryan Says...

    On June 19, 2012 at 6:08 pm

    Scientists actually have discovered life on a distant planet. The thing is, they are only single-celled organisms currently. One billion planets like Earth sounds like a lot, but scientists estimate that our universe has approximately 3 septillion stars and more planets than that. If 3 septillion doesn’t sound like a lot, it is 3,000,000,000,000,000,000,000,000. I believe that there are an almost infinite amount of universes, but I don’t think that our universe is infinite, i think at the end of it is a wormhole to another parallel universe.

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