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Submitted on
May 24, 2012
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Gliese 581g by Alpha-Element Gliese 581g by Alpha-Element
:omfg:!!!!!:bulletred:YOU NEED TO DOWNLOAD THIS IMAGE TO SEE MOST OF ITS DETAIL:bulletred:!!!!!:omfg:


Gliese 581g

:bulletblue: constellation: .................. Libra
:bulletblue: distance from earth: ........ 20.5 ly
:bulletblue: star's name: ..................... Gliese 581
:bulletblue: star's type: ....................... M3V, red dwarf
:bulletblue: system's name: ................. Gliese 581

:bulletblue: planet's status: ................ unconfirmed
:bulletblue: planet's name: ................. Gliese 581g
:bulletblue: planet's nick-name: .......... Zarmina (after discoverer's wife) (unofficial)
:bulletblue: planetary class: ................ super earth
:bulletblue: planet's radius: ................ 1.3 - 2 earth radii
:bulletblue: planet's mass: .................. 3.1 - 4.3 earth masses
:bulletblue: surface gravity: ................ roughly 1.1 - 1.7 earth gravity (comfortable range for humans)
:bulletblue: rotation period: ................ see below desription for more information
:bulletblue: axial tilt: .......................... see below description for more information
:bulletblue: atm. comp.: ..................... probably oxygen, nitrogen, carbon dioxide, water vapour, other common gasses
:bulletblue: atm. density: .................... earth-like or a little denser (still comfortable for humans), unlikely to be dense
:bulletblue: average surface temp: ....... expected to be -37C - -12C, see below description for more information
:bulletblue: satellites: ......................... see below description for more information

:bulletblue: orbital eccentricity: ............ low
:bulletblue: orbital direction: ................ prograde
:bulletblue: orbital distance: ................ 0.146 au
:bulletblue: year: ............................... 36.562 earth days or 0.1 earth years
:bulletblue: place in system: ............... center of habitable zone


-gliese 581g, is the most earth like exoplanet ever discovered in terms of its mass, radius, gravity, place in its system and many more. it has been given the unofficial name, zarmina, named after its discoverer's wife. it is the fourth planet out from its star, gliese 581, and sits comfortably in the habitable zone. the star is a red dwarf, one of the most common types of stars in our galaxy. the star is only 20.5 light years from earth, putting the system on our metaphorical doorstep. it is also the closest system know to have a planet orbiting in the habitable zone of its star. the planet however, orbits only at 0.15 au from its star with a year of only 36.5 earth days! but because the star is a red dwarf with only a third the mass and luminosity of our sun, the star's habitable zone is brought much closer to it, placing planet g in the perfect place right in the center of it. also, due to the planet's short distance from it's star, the star would appear as a huge red ball in the planet's sky about 5-10 times larger than the sun is in ours! the star would also bathe the planet in a reddish glow, along with all other planet's in the system.

-because of the planet's close proximity to its star, the planet is said to be tidally looked to it, meaning only one side ever faces the star, while the other faces away. if this is the case, the side facing the star would be searing hot while the side facing away would be freezing cold. there would be a thin area of habitability around the planet's terminator, which is the line that seperates night from day. here the star would constantly sit on the planet's horizon and supply the right amount of light and heat for life to exist in this thin strip of habitability. this would result in an "eyeball" appearance on the planet, or as some scientists have called, an "eyeball earth".
-but that is not the case because the planet's large mass and slightly higher gravity is enough to hold a denser-than-earth atmosphere to its surface. so even if the planet were to be tidally looked, the dense atmosphere would circulate the heat around the planet and keep the global temperature comfortable for life, making the entire planet habitable, which is the most likely case.

-then there is the scenario where the planet may not be tidally looked and instead rotates. this obviously makes the entire planet's surface habitable except for the poles, which would be colder. but in my opinion, if the planet does rotate, it would probably be very slowely over a period of a good few days on earth. if the planet does have an axial tilt, it would probably be very low as well, due to the slow rotation period.
- it is unlikely that the planet rotates quickly, but if it does, it may also have a significant tilt as well. this tilt would result in seasons on the planet, just like those on earth. however, the catch is that each one would only last for about 9 earth days! or only a tenth as long as the 3-month long seasons here on earth. this would result in extremely varied, unpredictable and quick-changing weather on the planet. but again, this is vary unlikely as the planet's large mass and radius would slow down its rotation period to a more stable one and as a result, decrease its axial tilt as well.

-even after all these scenarios, the planet would still be easily habitable though. just showing you how easy it is for life to take hold, even in the harshest conditions!

-the system itself is about 7-11 billion years old, which is alot older than ours at only 4.5 billion years old! this is because of the very long life span of red dwarfs which burn fuel much slower than normal stars like our sun. as a result, any life on the planet, would of had more than enough time to take hold and evolve! and if so, the dominant species on the planet would have definately evolved into a super or even hyper-advanced race of intelligent beings! these beings would most likely be ahead of our current technology by at least 2 billion years! thats definately enough to say that they've established space travel to other systems with great speed, and use of little resources! they could already be colonising and exploring other worlds as far as the other side of the galaxy or even other galaxies! whats not to say that they've already visited earth multiple times to examine our species, culture, technology and planet? but if they have visited us before and had the intention of destroying us, they would have done it long ago! for all we know they may have visited us before, thousands of years ago and assisted us with our developement and technology.
so the logical answer here it that if they exist, they are friendly, otherwise they would have gotten rid of us long ago! the planet's atmosphere may also have a similar composition as ours. the alien species would probably also bear resemblance to we humans. the atmosphere may also have a high level of carbon dioxide in it due to industrialisation, or it could have been put there purposely by the species to allow for a temperature rise to make the planet even more habitable.

-the alien species on this planet would have most likely already discovered elements not seen or manufactured on earth. elements with much higher atomic masses than those we know of, but still stable under normal conditions. these new elements may also have properties very useful for manufacture, space travel, commercial purposes and many more. the alien species is probably so advanced that they can create any element they want with the desired properties and uses! can you imaging an element used in infrastructure thats just as strong or stronger than maybe even diamond?! or super fluids at normal temperatures instead of at absolute-zero?! there technology may be so advanced that even our world's top minds would have trouble just trying to understand it!

-to explain the planet's very large mass of 3-4 earth masses and 1-2 earth radii, but only 1-1.5 earth gravity, it is possible that the planet could be made up of elements lighter than those found more commonly in the earth.
-or the core may be small, but made up of super-heavy elements not commonly found on earth along with the heavy metals abundant on earth. resulting in lower gravity at the surface but much higher gravity at the core.

-the planet has a large mass, so logic dictates that it should have at least one average-sized moon, or many smaller moons. but because the system is compact, and the planets are relatively large and orbit close to each other, their gravitational interactions with each other may disrupt the orbit of a large moon around the planet and cause it to be lost. but i'm not too sure if the gravity of the other planets really effects it or not. so it is hard for me to make a definate conclusion about any large moons. however, the planet may have some asteroid moons at least. but then there is the possibility that most asteroids in the system could had been cleared out long ago. so there really isn't a definate answer for the planet having any moons.

despite gliese 581 being one of the closest stars to our sun, it is practically invisible to the naked eye! again because the star is a red dwarf and puts out very little luminosity. but the sun would be an easily visible star in the southern hemisphere of the planet. we are viewing the planet from about an angle of 20 north of the equator. from the planet, the sun would appear as part of the constellation of taurus, at the end of one of its "legs". it is the bright yellow star at the bottom of the chain of three stars between the thrusters. the other two stars in the chain are part of the rest of the "leg". aldebaran is another star in the constellation of taurus and is seen as the red star near the top left of the planet. orion, one of the most famous and easily recognizable constellations in the sky, would appear greatly unchanged! it too, would appear as a constellation in the planet's southern hemisphere. it is seen to the far left of the planet. the stars shown in it are the ones that make up its basic shape: betelgeuse, heka, bellatrix, mintaka, alnilam, alnitak and rigel. saiph would just be off to the left, currently out of view. the famous pleiades/ seven sisters star cluster is seen to the top of the right of the planet.

other stars shown that would appear in the planet's southern hemisphere:

- sirius. near the bottom left of the planet
- cursa. yellowish star between rigel and sirius.
- procyon. bright star near the top left of the planet.
- toliman/ rigel kentaurus/ alpha centauri. bright yellow star to the bottom right of the planet.
- menkar. reddish star bellow the twin thrusters.
- sheratan AB. bright star to the far right of image.
- hamal. star to the top left of sheratan.

other interesting stars not shown include: capella AB, arcturus and vega which would appear as very bright stars in the planet's northern hemisphere. there would also be canopus in the southern hemisphere, another very bright star. there are many other bright stars around the system, but those four would be the brightest.

gliese 581g is probably the most habitable world known to humans. it is even more capable of supporting life than earth. if it really does exist and i say it does, i'm really hoping to see it and the alien species that lives on it!

i'm back people!:D and i've brought with me this wonderful picture of planet gliese 581g, in my depiction of it, which i think is quite accurate!:)

i was inspired by the movie battle ship to make this! it really wasn't a bad movie. good acting, awesome graphics, lots of action and entertaining enough to keep you glued to your seat! however, what really didn't stick with me was the plot involving the aliens. i mean, we signal them, they come about a day later and just start attacking everything they see as a threat to them and their operations. the humans didn't even try to communicate with them or ask them why they came!? and then we just started attacking them?! but in truth, we did kinda attack them first though. so maybe they were merely trying to defend themselves. the reason why they came to earth wasn't really clear in the movie, but it looked like they were studying the planet and maybe even try to signal back there world so they could start colonising earth. what pissed me off though is the fact that they could travel 20 light years in a single day, but the only weapons they had were grenade-like energy catriges and gyroscopic robotic orbs! they didn't even have any energy based weapons or guns or something?! but what if they didn't intentionally bring energy weapons to ensure that nothing serious happened to the planet? maybe they were planning to live along side us, probably in our oceans maybe? because if you look at the images of the planet they showed in the movie, you could see lights in the oceans.

so back to the image. yes, i put an alien race on the planet because i'm 99% sure that if the planet does exist, there would be an advanced race given the system's age and planet's habitability!:o it's "unethical" to include an unconfirmed alien race on an unconfirmed exoplanet, but i feel that i would be insulting the world if it does exist by not including one!:( that aside, i really enjoyed making this one!:)
i wanted to include a moon in the background, but couldn't because of the angle. no biggy though, still came out awesome!:D

this is also the first image where most of my time spent working on the planet's texture!:o i spent alot of time working the continents, islands and coast. i worked on the coast to make it look as natural as possible! infact, in terms of realism, its probably my most realistic planet yet!;) won't you agree?!:D its also my most massive image as well, 10,000px X 5,000px! the planet itself is about 4,000px across in this image, and the texture was created in 16bit!:o thats huge resolution for much higher image quality, and also saved as a png too for even more detail!:D so go on download and explore it, but i have to apologise for the long download time, huge file size!^^;
made the image in photoshop along with the planet's texture. the position of the stars were taken using celestia. its a quite useful space exploration program!:)

all comments and critiques are welcome on this one. i really want to get to know what you think about the image!:) do you guys think this should also be a print? i'm not sure if you'd like it or not. please comment on what you think.:) and as always, enjoy the artwork!;)


you can see and read more about this incredible world at these sites:

wikipedia: [link]
time science: [link]
nasa: [link]


:icondonotuseplz::iconmyartplz:This Artwork is 2012 Alpha-Element.
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I think we can all agree that many space artists have the great desire or wish to once go to space and experience all of these purely epic impressions in person which they normally only are able to illustrate on a canvas. I find it fascinating that you are making these kind of concepts featuring reallife planets (Not only this one, I am talking about all the other planets, like all of this Kepler stuff and all of these Planets that have Numbers and sole letters in their names which makes me remembering them very unlikely xD). Here's the reason:
Although our technology is not advanced enough to visit these planets yet, you get a very different and unique feeling while looking at these special realife illustrations which is contrasting all other space art because although we will not visit these planets in our lifetime, you know that they exist in reallife and you feel excitement because perhaps future generations will fulfil the wishes that we have today. It is like regular spaceart, but different, because it exists in realife. Pretty interesting stuff.

When I first saw this piece and the other realife planet concepts, I was pretty impressed by the realistic looking designs and also the idea of making illustrations of realife planets. The idea is very original and that stroke up a pretty good first impact.

Let's get to the visual aspects and the skills of how you do the planet.

I think it is absolutely worth praising and positively mentioning the great size of the canvas which leads to extreme details which again lead to a terrific quality of the piece. The texture is not blurred, thus this is Greg Martin Quality. Museum Quality. With all my seriousness, I could even very well imagine you to work with such qualitative dimensions in a financial business. Perhaps you could design the planets for the next great sci fi movie or game; I believe it would be worth some money.
You can hang a gigantic print of this piece on your wall and it will not look blurry or pixelated, because it has 50 Megapixels. That is ultra high definition. I fills my heart with excitement, curiosity and also a little bit of jealousness while looking at this piece in it's full resolution.

The planet looks very realistic. The texture looks original and it is detailed. The lightning/reflection of the atmosphere look normal and the colors flow pretty well together. The combination of clouds and the texture overall looks very epic.

To sum up the good stuff, I couldn't do it better in my dreams. The look and vision of this piece are very nice.

If you would like to improve, here are some things worth mentioning: I understand that the background is intended to be black and boring, because this is an illustration of a realife planet which actually exists. And in realife it is extremely uncommon to find all of these fancy and colorful nebulas in the background of a planet. So although the background looks boring, it wouldn't look right if you did something else. When Cassini took pictures of Saturn, there weren't any stars in the background at all and the overall picture looked pretty boring except for the details on saturns rings. But it was a realife picture of a realife planet in realife space, so it MUST be the perfect thing that space artists should orient themselves after because it is the REAL thing. Only problem is that realife space usually looks worse than artistic space pictures. In Space art, we have much more lightning and composition. So algthough the following tip is not really directly hinted to this piece, it is important to be said in my opinion and it is pretty useful in future space art.
Please avoid bigger areas of TOTAL BLACK and TOTAL WHITE. It is okay to have them, but you should try not to make bigger areas of these total colors, except for the spacey background if you need. This said, you must watch out that the dark side of the planet is not completely black. The luminosity should vary from extremely dark (not total black) to a middle-dark tone with very well visible details, depending on the reflection of the background. If there are many stars and a bright nebula in the background, the dark side of the planet should be visible clearly and it should be brighter as usual because it reflects the light from the background. This reflection does not occur in this piece because the background is completely black (except for the stars) but I still would have added at least a slight, extremely dark contour of the planet texture to the dark side. This is important because the dark side and the light side are both part of the planets and if you leave one of them out, you are missing half of the sould of a planet.
I know this does probably not really matter to you because you can do better if you wish but considering that this planet's dark side is totally black, I only wanted to mention this.

What seriously cracks me up are the city lights. Please never make selection circles like these again and fill them with a noise filter. It just looks plain bad. There are so many nice and easy ways to make decent and very good looking city lights. Go to MS Paint, fill the canvas with black and fill everything with some thoughtfully placed and perfect white circles (thicker than 1px) and also add straight lines if you want to make a coruscant-like city light texture that has these interesting circles and lines that are sewing the planet together. Then copy-paste it into photoshop, blurr it a bit and play around with the levels. You can also add a Paint-Filter in order to disposition the texture a bit so that it looks a bit more realistic rather than too perfectly placed and thus looking unnatural. There are plenties of tutorials on dA on how to make city lights. Playing around with levels is usually a very good idea. Remember to set the blending mode to screen or linear dodge if you are putting in a night-side texture.

I hope I could help you a bit. Overall, I find this piece extremely good. The idea and vision are fantastic, the quality is overwhelmingly professional and the technique/look is also very good with the minor exception of the city lights. But don't worry, city lights are easy to improve on and they are not such a big deal. You can also just leave them out of they are unfitting.

I apologize for wrong punctuation and capitalizing the first letters of words which shouldn't be.

Nevermind. Your space art is radical and very epic, keep working. Yours truly,

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Xannador Featured By Owner Jun 19, 2014
I love this planet. I hope we'll get to know more about it one day. Is the gravity there slightly higher or slightly lower?
Alpha-Element Featured By Owner Jun 23, 2014  Hobbyist Digital Artist
thanks and i'm glad you like it.:D
well, on the topic of gravity, it all depends on the planet's radius and density. if the density is high, so to the gravity and vice versa. because we only know of the planet's mass, it really isn't possible to determine its other physical properties like density, radius or gravity. for the moment, we can only assume that the planet is rocky in composition like earth and so may have a gravity 1.5 times that of earth. hope this clarifies things a bit!:)
Xannador Featured By Owner Jun 27, 2014
I see. So we'd bearly notice the difference, right?
it would be pretty cool if the gravity was just slightly lower...then it would be like Pandora from Avatar :lol:

thank you!
RaymondEternal Featured By Owner Apr 21, 2014  Hobbyist General Artist
Wow awesome!!! This the most fave planet ever found... I only know that it can be found in the goldilocks zone yet i dont where that is.  If only i could make spaceship and explore that region ( yet it take light years away from our planet)  Very Nice artwork and thank you for writing the Descriptions :D
Alpha-Element Featured By Owner Apr 22, 2014  Hobbyist Digital Artist
thank you and your welcome!:)
RaymondEternal Featured By Owner Apr 21, 2014  Hobbyist General Artist
Good Alien Species Candidates are:

- Saiyans from Dragonball ( A gravity much stronger than earth would make evolve the creatures , possessing super human strength and having human qualities )

- Protoss from Starcraft ( A super intelligent and highly advance beings would make the creatures evolve like them)

- Necrofriggians from Ben 10 ( I remember Big Chill's planet resembling like gliese 581g , having half one hot and the other half cold )

- Or maybe a mix of this trio...

I only hate the fact that they find habitable planets for there own sake , not knowing that there are inhabitants in there ( I remember the movie " Starship Troopers"). I mean we should be more concern of our planet... Maintaning its beauty and making it peaceful to live!!! coz this our home , the place where we are born... and its the only Earth.

AndrewLyle Featured By Owner Sep 25, 2013
is good
Alpha-Element Featured By Owner Sep 26, 2013  Hobbyist Digital Artist
thank you!:)
AndrewLyle Featured By Owner Feb 11, 2014
i was the new world:) (Smile)  tau ceti is planet earthdeviantART Groups 
ToxicFusionHD Featured By Owner Jun 14, 2013
Is it possible if you can make Gliese 667Cc with its 3 suns? Love the art by the way fantastic.
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