Can the Sirius Star System Support Life?

Updated on March 21, 2018
CreeViking profile image

Robin Olsen holds a Computer Information Systems and an active and vigorous sense of curiosity and imagination.

In 1976 a book was written by Robert Temple called 'the Sirius Mystery'. This book suggests that the Dogon tribe of Africa had advanced astronomical knowledge given to them by extraterrestrials from Sirius. There was certainly a lot of anomalies surrounding the knowledge of the Dogon tribe. They knew of the existence of a second star that was not visible to the naked eye, and the Dogon had no telescopes. It was postulated that they also knew the existence of a third star in the Sirius system that is completely undetected to this day. The existence of this knowledge as well as several other pieces of information were cited as proof that the Dogon tribe had been visited and influenced by extraterrestrials (Called the Nommo - an amphibian race)

The book is well written and quite extensive and it would take awhile to properly research all the data to determine its validity. Rather than go over this, and all the following books written on the subject since 1976, I have decided to first determine if the Sirius star system, based on the scientific data I have been able to find, is actually capable of sustaining life.

So What Do We Know for Sure?

For that, let's first look at what we know for sure. Sirius is a known binary star system. This means that there are two stars in this system. The main star is a Class A (White) star called 'Sirius A', there is a companion star - 'Sirius B' - which is a white dwarf star roughly 20 AU (astronomical unit) away from Sirius A currently and has a orbit of 49.9 years. The system is roughly 300 million years old. (1) Sirius A has a habitable zone of between 2 and 5 AU , otherwise known as the 'goldilocks zone'. Any planet closer than 2 AU and it would be too hot, farther out than 5 AU and it would be too cold to support life.

Let's look first at the age of the star system. Scientists have put the age of the Sirius system at roughly 300 million years old. Our solar system is 4.5 billion years old to give an idea of how long it MAY take for life to develop normally to the stage it has on Earth, but be careful when making this comparison as Earth has suffered numerous extinction level events such as asteroid impacts throughout its history that may or may not be common in other star systems. However, even keeping that in mind, 300 million years is barely long enough for planets to form never mind life forming on that planet.

This means that any planet orbiting Sirius A would be a young world. It would have warm, shallow oceans and any continents formed already would be small, with little or no erosion and volcanic. The planet would have a thick and very humid atmosphere, and this environment would be dominated by a bright, violent sun beaming out sterilizing ultraviolet light. At the bottom of these oceans, protected from the white sun's detrimental effects, simple forms of bacterial life could gain a toe hold, nourished by hydrothermal vents from the planet's interior. How long this life would take to develop and evolve into more complex life is variable.

Add to this the fact that Sirius A lifespan in its current configuration - otherwise known as its main sequence lifetime (MSL) - is only 1 billion years and 300 million years have already passed and we can assume that no life that formed on any planet in the habitable zone would live long as in 700 million years all planets in existence today around Sirius A will be destroyed when it reaches the end of its MSL.

So the age says that the prospect of life in the Sirius star system is low but what about the stars themselves?

the Sirius Star System
the Sirius Star System

As stated, it is known for sure that Sirius has two stars, with a possibility for a third, but let's focus on the two Science knows about for sure right now. Sirius A is a spectral type A star - also known as a white star. These stars have a high mass and burn brighter and hotter than our sun, which is a class G (yellow) star, because of this they tend to consume the supply of hydrogen faster and thus are shorter lived. They tend to give off a lot of ultraviolet light and, due to all of this, biological evolution is severely restricted in Sirius. (2) (3)

Sirius B is a white dwarf on a 49.9 year orbit of Sirius A and during that orbit is between 8 and 31 AU distance from Sirius A. This star would give off similar brightness and radiation to Sirius A and, when it is closest to Sirius A would be a very strong 'second sun' for any planet near the outer rim of the goldilocks zone for Sirius A. The existence of a second white dwarf star in the Sirius system would seem to suggest that the possibility of life is extremely remote indeed.

But wait, there is a supposed third star in the Sirius system. According to Robert Temple's Dogon information, this should be a red dwarf star. He was so certain of it that he made the following quote:

"If a Sirius-C is ever discovered and found to be a red dwarf, I will conclude that the Dogon information has been fully validated."

So, what about that third star? Well, funny you should ask that. According to gravitational studies done in 1995 showed a possible Brown Dwarf star orbiting Sirius A every 6 years. Could this be the elusive Sirius C spoken about by the Dogon?( 4)

A brown dwarf star is a sub-stellar object whose mass is too low to sustain a hydrogen fusion reaction in its core. So it never becomes a full blown star and resembles a large Jupiter like gas giant.

However, before we lose ourselves too much in determining the effects this third star would have on any planets in the goldilocks zone it should be noted that a more recent study published in 2008 and using advanced infrared imaging technology came to the conclusion that Sirius PROBABLY did not have a third star. I say probably as the survey of the entire system was not fully complete having a region roughly 5 AU from Sirius A being unexplored during this study. (5)



So, in conclusion, I would have to say that due to the relatively young age of the Sirius system, combined with the extreme challenges to life development in a Class A star system and the problems presented by Sirius B roaming through the system every 49.9 years makes the probability of even simple life in the Sirius system highly unlikely never mind an advanced aquatic species capable of traveling the 8.6 light years to Earth. I do not say it isn't there, just that it is highly unlikely that the Sirius star system can support life in any advanced form unless of course this life took the form of a purely aquatic life form capable of 'breathing' in the same way a fish does on our beloved Earth.

I don't fully understand how the Dogon got the knowledge they got regarding Sirius, was it actually from 'The Nommo' - that aquatic species that is supposed to be native to Sirius? Was it a wandering band of astrologists that came to the Dogon territory to sky watch who gave them the info? After all, the Dogon has been around since the Sumerians and there have been many civilizations since then that had astrological capabilities in that part of the world, they could have picked that up from them. How they got it is unknown, that they had it is pretty much undisputed. Did the info come from Sirius itself? I would have to say no based on my current knowledge of the environment present in that star system.

In the future, more info may reveal more insights. In 1976, when Robert Temples book was written, it was dismissed outright by other scholars as nonsense. But is it? Since his writing of his book the second star has been 100% confirmed and the third star has not been mathematically ruled out and indeed, gravitational studies in the 90s did show that something was there.

The Sirius Mystery continues...

Do you think humans have been visited before?

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Do you believe in Extra-Terrestrial life?

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Given Humanity as it is today, if you were an alien species would support or oppose first contact with humans?

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The Book That Spawned This Article

The Sirius Mystery: New Scientific Evidence of Alien Contact 5,000 Years Ago
The Sirius Mystery: New Scientific Evidence of Alien Contact 5,000 Years Ago
Robert Temple's complete account of the Sirius Mystery.

Referenced Material

(1) Liebert, J.; Young, P. A.; Arnett, D.; Holberg, J. B.; Williams, K. A. (2005). "The Age and Progenitor Mass of Sirius B". The Astrophysical Journal )

(2) BENEST D., 1989: Planetary orbits in the elliptic restricted problem. II - The Sirius system. Astronomy and Astrophysics, 223, 361

(3) BENEST D., 1993: Stable planetary orbits around one component in nearby binary stars. II Celestial Mechanics, 56, 45

(4) Benest, D., & Duvent, J. L. (1995) 'Is Sirius a Triple Star'. Astronomy and Astrophysics 299: 621-628

(5) Bonnet-Bidaud, J. M.; Pantin, E. (October 2008). "ADONIS high contrast infrared imaging of Sirius-B". Astronomy and Astrophysics 489: 651–655. arXiv:0809.4871. Bibcode 2008A&A...489..651B. doi:10.1051/0004-6361:20078937.

© 2013 Robin Olsen


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    • profile image


      4 weeks ago


      So while I am not suggesting there are aliens in Sirius and even if there are that they visited us.

      I do have to point on one weak point on your argument against. It only take 1 to 10 Million years for a planet to be formed (300 Million is plenty of time) and it believed that life here on Earth began some 100 Million years after the earth was formed.

      Sure, there is no known evidence of any "intelligent life" on our planet up until some 3 Million years ago or so. Although, I suppose you could dispute there is still no intelligent life here on earth.

      However, we really don't know why it took so long for intelligent life to emerge here, but that doesn't mean it has to be so in other planets. Also, it could have been that intelligent life did arise on our planet several times, there is just no evidence of it left.

      My point it that there could be intelligent life orbiting Sirius A. We don't know. If I were them I would probably stay well away from Earth.

      Thanks for the post.

    • profile image


      5 months ago

      I would like to say only Habel telescope and Nasa organisation can help us to find out about Sirius enigma .Sirius enigma is not simple enigma because many cults,mythologies even Freemasonry have spoken about it,Erich von daniken and another UFOlogists have discussed about it one time Wernher von braun had sayed when he was kid several times had dreamed about Sirius star.I believe if we find one planet suitible for life in Sirius solar systém in future maybe would resolve about Extraterrestians problém.

    • profile image


      12 months ago

      Sirius B was once a main sequence star 5.05 times larger than Sol, our sub - before Sirius A was even borthed out of its stellar nursery. The Sirius B supernova was 8.6 ly away so it stripped earth's ozone layer cobtributing to rise in global tempuratures that led to the End Ordovician Extinction.

      Before Sirius B went supernova, and this is suggested and you even posted a picture of it, residual gravitational effects shows a Brown Dwarf like object, or what it reformed into after the Sirius Supernova blew it apart and it's asteroids recombined into a shallow husk of its former self, the illusive "Sirius C".

      Like Jupiter, this brown dwarf could have had a Europa moon while Sirius A was still a Blue Newborn Star forming in it's stellar nursery, for near a billion years that "Europa of Sirius" would have been fine.

    • profile image


      16 months ago

      I believe that originally - prior to Dynastic Egypt when Osiris was thought of as Orion - Osiris was thought of as Sirius A, Isis was Sirius B [large white dwarf], Nephthys was Sirius C [once a neutron star, now a black hole] and the Horus (the Son) is the sun. ... and that (as the binary star system to our sun) the centre of gravity was just off Sirius C. ... the Sirius star system being predominantly female (referred to collectively as Isis) attracts the sun.

    • profile image


      17 months ago

      How long would it take a planet to orbit Sirius A? Then, what about seasonal?

    • profile image


      18 months ago

      Since Cheops and its two sister pyramids represent Orion's belt, which is of no significance except that it points to Sirius, Rosicrucian and Masonry and other esoteric traditions believe it to be of importance. A lot to do about nothing.

    • profile image

      p rod 

      21 months ago

      perhaps the advanced race of beings chose Sirius region because of its Goldilock zone, and they are much 'older' than the Star System they later chose to inhabit...who knows?

    • profile image

      Daniel Webster 

      2 years ago

      That's why when anyone mentions aliens from Sirius or the Pleiades I dismiss it right out Sirius won't live long enough for anything more than single celled organism and the Pleiades won't even live that long unless there's some yellow and orange stars in the Pleiades and they would be infants too one thing becomes quite clear either the aliens and lying to them or they're lying to us

    • profile image

      S. Townshend 

      2 years ago

      Who is to say the “Nommo” or amphibian life forms originated on Sirius? Perhaps they traveled there from necessity or exploration and colonized it? That has been their home world or base of operations for millions of years. Thus, they would consider it home. After all, if they can travel here then their scope seems to be boundless. I’m sure if they are real, they have visited many suitable worlds. Good luck!

    • teaches12345 profile image

      Dianna Mendez 

      2 years ago

      Interesting thoughts on visitations from other planets. Your share on stars in fascinating.

    • CreeViking profile imageAUTHOR

      Robin Olsen 

      2 years ago from Rural Canada

      Thanks for the comment Steven. As one poster above suggested one possibility is this was some sort of colony world and not the original world where this species developed...

    • profile image


      2 years ago

      Presumably Sirius A and B would have formed at the same time, so for Sirius B to now be a white dwarf, it seems reasonable to assume that as a main sequence star it would have been considerably larger, brighter and hotter than Sirius A is now, as it reached the end of the main sequence much earlier.

      If I assume it was a smaller than average type B star (next class of star bigger than a type A Sirius star on the Hertzsprung-Russel diagram, and smaller than average since it collapsed to a white dwarf rather than a neutron star) then it would would have had a life expectancy of perhaps 150 million years, give or take, and this fits plausibly with the estimated 300 million year age of the system.

      So for the first 150 million years this system would have consisted of Sirius B, a small- medium type B star ( much larger than Sirius A, shining blue hot and putting out an enormous amount of energy, making the neighborhood around Sirius A extremely inhospitable) in addition to Sirius A.

      When Sirius B had finished consuming hydrogen in the core, it would have likely started to collapse and become hotter, until the helium in the outer shell started to fuse, likely creating an enormous red giant star. When the helium, and other created fusible elements , possibly up to iron depending on star size had been fused, the star would then collapse under gravity once more, in this case to a white dwarf. This would have likely resulted in a nova, blowing off maybe 80% of the solar mass, sterilizing the stellar neighborhood.

      So any life that my have got started around Sirius A would have suffered a massive blow.

      That gives an estimated 150 million years from then till now to evolve our advanced alien species.

      Given we seem to have taken 4,500 million years to have reached our current state of intelligence here, I'm skeptical to say the least about advanced life from Sirius :)

    • profile image


      3 years ago

      Mr. Robin Olsen, I recommend you The Book of Books, written by Robert Charroux. You will find out there about our real history. It's amazing.

    • MarleneB profile image

      Marlene Bertrand 

      3 years ago from USA

      Fascinating! It is always fun to learn about the elements of the universe. You did an excellent job researching this subject. I enjoyed reading about all the different types of stars.

    • profile image


      3 years ago


    • profile image


      3 years ago

      Excellent and fascinating report in the Sirius Star System. Life as we know it cannot exist in the Sirius Star System. But this does not mean that life has to be as we know it.

    • robhampton profile image

      Rob Hampton 

      4 years ago from Port Richey, Florida

      Great article. I am FASCINATED with the universe. The Kepler is finding some interesting stuff. Too bad some of this stuff is millions of light years away! I'm sure though that there is life somewhere in closer proximity to us, not necessarily "intelligent" but at least like plant life, and smaller organisms. I'm 44 years old and I'm sure in my lifetime we'll find some definative form of extraterrestrial existence

    • CreeViking profile imageAUTHOR

      Robin Olsen 

      4 years ago from Rural Canada


    • ThatMommyBlogger profile image


      4 years ago from The Midwest

      Interesting hub...

    • MizBejabbers profile image

      Doris James MizBejabbers 

      4 years ago from Beautiful South

      This is a very well-researched article from the scientific standpoint. However, even scientists are beginning to study the possibility of dimensions and life in those dimensions. This article was written from the view that life would be of the 3rd dimension like earth. I doubt very seriously that 3D life would exist on any of the planets of Sirius, but I consider the possibility that life could exist in another dimension. I believe this information the Dogons have passed on is based on truth.

    • profile image


      4 years ago

      no. sirius system cannot suporrt life so you need to have oxygen tanks

    • CreeViking profile imageAUTHOR

      Robin Olsen 

      4 years ago from Rural Canada

      Thanks Duke for the read. Even though the Sirius is only 300 million years old there is no indication that we even know how long it takes to develop intelligent life... the earth is 4.5 billion years old but for all we know there has been intelligent life here before us and it either left, or got wiped out in some sort of global catastrophe...we just don't know. There is a theory that humanity is suffering from a collective amnesia when it comes to our own history (we are missing huge chunks of it according to some). So how long does it take? Who really knows this?

    • profile image

      Duke Walters 

      4 years ago

      Very good article. I have heard the story about the dogons many times and have read how scientists immediately discard it. One of the conclusions is that the Sirius star system is not old enough to have produced advanced ET intelligence. Based on our current understanding, that conclusion may be true or not. No way to know for sure. However, that is not the only explanation. Let's assume the Sirius system is not old enough to have developed advanced ET intelligence. Well, what if those ET's just settled there and originated somewhere else? That is a perfectly feasible explanation. If ET colonized the Sirius system as an extension of their civilization. Three hundred million years is more than plenty of time for an advanced ET race to prepare even the most barren of worlds for an advanced society. That type of planetary and astro engineering would certainly be within the reach of an advanced galactic race. Even if the Sirius system is 300M years old and that is not enough time for advanced ET life to develop, that proves nothing.

    • Lady Guinevere profile image

      Debra Allen 

      5 years ago from West By God

      You did do your research and yes that can be lots of fun. I also so not strictly go with anything on Wiki because it can be edited by anyone. I also do not think that aliens would want to contact humans, especially the military....because all we know to do is kill first then ask questions. Though I have had an experience with aliens, twice and twice too many for me. I have had other things too, but will not say here.

      There is so much that we do not know or that has been hidden for one reason or another. No one is an expert at anything only because things change as we learn more.

    • CreeViking profile imageAUTHOR

      Robin Olsen 

      6 years ago from Rural Canada

      The sources for this info are located in the footnotes of the article itself.

      Also, I never stated where the second star CURRENTLY is in the Sirius star system, only that it existed and it's orbital details were given. It may very well PRESENTLY be 20 AU away, who knows.

      The problem with Wikipedia is the info is not vetted properly before it is published. I prefer to reference work that has been vetted by peers, etc. Gives me a greater sense of confidence when I do it this way

    • profile image


      6 years ago

      Interesting. I'm always fascinated by Sirius because of the facts and conspiracies.

      "Sirius B is a white dwarf on a 49.9 year orbit of Sirius A and during that orbit is between 8 and 31 AU distance from Sirius A." Wikipedia says Sirius B is about 20 AU away from Sirius A. May I know the source of how you obtained that information?

    • CreeViking profile imageAUTHOR

      Robin Olsen 

      6 years ago from Rural Canada

      Muito obrigado. Fico feliz que você tenha gostado.

    • profile image


      6 years ago

      muito bom, mui claro. Obrigado.

    • CreeViking profile imageAUTHOR

      Robin Olsen 

      6 years ago from Rural Canada

      thank you loveofnight, I am glad you enjoyed it and learned something as I did when I was looking into this.

    • loveofnight profile image


      6 years ago from Baltimore, Maryland

      this is definitely a very useful and interesting read. this is the first that i have heard on the topic so thank you for opening my eyes to something new.thanks much and happy hubbing

    • CreeViking profile imageAUTHOR

      Robin Olsen 

      6 years ago from Rural Canada

      Excellent link, thanks for that nommo

    • profile image


      6 years ago

    • CreeViking profile imageAUTHOR

      Robin Olsen 

      6 years ago from Rural Canada

      I think any surface life is doomed from the start with all the ultraviolet radiation present from two confirmed White stars (one's a dwarf) however I find it extremely interesting that in Robert Temple's book he described the species from Sirius as being the Nommo, an aquatic species and my research into this says that any life in Sirius would most likely be aquatic in nature.

    • profile image


      6 years ago

      With more ultraviolet and X-ray radiation from Sirius than our Sun puts out, it is possible that any life on a planet in the Sirius system would evolve faster than it has here on Earth. Maybe in 300 million years, intelligent life could occur and they might have travelled here.

    • psbhatt profile image


      7 years ago from HYDERABAD

      Dr Seth Shostak of SETI research admitted there are just 750 star systems studied for ET. Read full context:

      Did SETI study Sirius system? Well researched article, thanks.

    • CreeViking profile imageAUTHOR

      Robin Olsen 

      7 years ago from Rural Canada

      Thanks for your comments.

    • ohkennyabi profile image


      7 years ago from The East

      If the Dogon tribe had been around since the Sumerians, I think it is likely this knowledge of the Sirius system is gotten of from some unknown ancient civilization not known to us in the modern time. Perhaps more light will be shed over time as our pool of knowledge and discoveries increases. A very good Hubpage. Voted most useful and awesome.


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