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General suggestions for SpaceEngine

Posted: 12 Dec 2018 20:12
by Stellarator
SpacyLuke wrote:
Source of the post volumetric clouds is a must these days

I second this.

A-L-E-X wrote:
Source of the post What atmospheric gasses should be looked for to find the most colorful skies?

I forgot to answer your question A-L-E-X, excuse me: Ignoring other factors like incoming light-wave length variability, a high chlorine content in an atmosphere would a delightful but deadly green hue. Methane and ammonia, which are weak absorbents, might provide a lovely blue-green sky (because absorption is mainly in the red) if the atmosphere was thick enough. Other colors like red, purple, yellow or orange might exist if the right combination of atmospheric gas, wave-length, pressure and dust is present.

General suggestions for SpaceEngine

Posted: 13 Dec 2018 00:11
by A-L-E-X
Stellarator wrote:
SpacyLuke wrote:
Source of the post volumetric clouds is a must these days

I second this.

A-L-E-X wrote:
Source of the post What atmospheric gasses should be looked for to find the most colorful skies?

I forgot to answer your question A-L-E-X, excuse me: Ignoring other factors like incoming light-wave length variability, a high chlorine content in an atmosphere would a delightful but deadly green hue. Methane and ammonia, which are weak absorbents, might provide a lovely blue-green sky (because absorption is mainly in the red) if the atmosphere was thick enough. Other colors like red, purple, yellow or orange might exist if the right combination of atmospheric gas, wave-length, pressure and dust is present.

Thanks!  I remember reading articles about photosynthetic compounds on certain planets could be different colors, like purple, pink, blue or violet, it would be fun to see plants of that color implemented in the program!  We already have plants of those colors on earth, but they are predominantly green (because green is the middle of the spectrum?)

General suggestions for SpaceEngine

Posted: 15 Dec 2018 19:58
by N3cronium
It would be interesting if accretion disk shapes of black holes, neutron stars, and white dwarfs could vary. Maybe it could be a toroidal disk of material around the object, somewhat like a debris disk.

General suggestions for SpaceEngine

Posted: 16 Dec 2018 03:35
by Mosfet
N3cronium wrote:
Source of the post Maybe it could be a toroidal disk of material around the object, somewhat like a debris disk.


If it's supported by theory and data, it could be done eventually. Scientific correctness is the goal.

General suggestions for SpaceEngine

Posted: 19 Dec 2018 04:46
by JoseSantos23
EN: hey guys, I had an idea for creating procedural plants, it would look like this:
there would be a series of factors that would define the appearance of the vegetable, we would have as base a small plant like the grass, an average plant like a bush and a big plant like a tree.
For any plant: when pressure = 1 bar, the plant would be equal to the common plants of the Earth, when pressure less than 1 bar, the leaves of the plant would look like a cotton, to absorb more oxygen or other chemically active gas from the atmosphere , when the pressure greater than 1 bar, plants would have fewer leaves due to the ease of absorption of oxygen or other active gas in the planetary atmosphere.
Now we go to the stellar class variable, we know that there is the law of Wien, which relates the temperature of a body with the range of radiation it emits, its formula is λ = b / T, let's take the example the Sun, its λ equals 480nm, which in the range of visible light spectrum is the green color, the same color as the leaves, we could use this formula to calculate the colors of the plants on other habitable planets. Already the hue of these colors can use the star brightness variable, being planets that orbit stars class M, L or T being darker, and planets that orbit stars class F or B being lighter.
Now let's go to the gravity variable, planets whose gravity is about 1G, plants would be the same size as they have on Earth, planets where gravity is less than 1G, plants would be taller and slimmer, and planets where gravity is higher that 1G, the plants would be smaller and more robust, this would also apply to the animals of the planet.
Now we go to the variable of temperature and humidity, when the temperature is less than 10ºC and the humidity is high, the leaves would have a needle shape, like the pines of the Earth, when the temperature is more than 30ºC and the humidity is high, the leaves would be large as palm leaves, when the temperature is less than 10ºC and the humidity is low, the plant would be similar to a cactus, but with a more "woody" appearance when the temperature is higher than 30ºC and the humidity is low, the plant would be very similar to a cactus found in the deserts of the Earth, when humidity and temperature are normal, the plant does not have many changes.

The most complicated part is to develop the algorithm, in this part I am a complete noob, but the idea of how to do I already gave you, what do you think?

PT-BR: ei caras, eu tive uma ideia para criação de plantas procedurais, seria assim:
existiria uma série de fatores que definiriam a aparência do vegetal, teriamos como base uma planta pequena como a grama, uma média como um arbusto e uma grande como uma árvore.
Para qualquer planta: quando pressão = 1 bar , a planta seria igual as plantas comuns da Terra, quando pressão menor que 1 bar, as folhas da planta ficaria com uma aparência de um algodão, para absorver mais oxigênio ou outro gás quimicamente ativo da atmosfera, quando a pressão maior que 1 bar, as plantas teriam menos folhas, devido a facilidade de absorção de oxigênio ou outro gás ativo na atmosfera planetária.
Agora vamos para a variável da classe estelar, sabemos que existe a lei de Wien, que relaciona a temperatura de um corpo com a faixa de radiação que ele emite, sua fórmula é λ=b/T, vamos pegar o exxemplo o Sol, seu λ é igual a 480nm, que na faixa de espectro de luz visivel é a cor verde, a mesma cor das folhas, poderiamos usar essa fórmula para calcular as cores das plantas em outros planetas habitáveis. Ja a tonalidade dessas cores, pode usar a variável do brilho da estrela, sendo plantas de planetas que orbitam estrelas classe M, L ou T sendo mais escuras, e plantas de planetas que orbitam estrelas classe F ou B sendo mais claras.
Agora vamos a variável da gravidade, planetas cuja gravidade é cerca de 1G, as plantas teriam o mesmo tamanho que tem na Terra, planetas onde a gravidade é  menor que 1G, as plantas seriam maiores e mais esguias, e planetas onde a gravidade é maior que 1G, as plantas seriam menores e mais robustas, isso se aplicaria também aos animais do planeta.
Agora vamos a variável de temperatura e umidade, quando a temperatura é menos que 10ºC e a umidade é alta, as folhas teriam formato de agulha, igual aos pinheiros da Terra, quando a temperatura é mais que 30ºC e a umidade é alta, as folhas seriam grandes como folhas de palmeiras, quando a temperatura é menos que 10ºC e a umidade é baixa, a planta seria semelhante a um cactus, porém com uma aparência mais "lenhosa", quando a temperatura é maior que 30ºC e a umidade é baixa, a planta seria muito semelhante a um cactus que se encontra nos desertos da Terra, quando a umidade e a temperatura são normais, a planta não tem muitas alterações.

A parte mais complicada é desenvolver o algoritmo, nessa parte sou um completo noob, mas a ideia de como fazer eu ja dei a vocês, então, o que vocês acham?

Crowd Funding

Posted: 22 Dec 2018 22:55
by greenhand
You need to get crowd funded.  Patreon.. SubscribeStar.. just a couple of ideas..  Lots of people will subscribe.

General suggestions for SpaceEngine

Posted: 26 Jan 2019 12:22
by SpaceSpade
Hi everyone. Maybe all users of Space Engine know the "half-stars". Yeah, I'm talking about brown dwarfs. And... what is interesting about them?
So... Have you ever heard about recent news that tell that the lower (T7/8 V - Y9.9 V) class brown dwarfs may have some water in their atmospheres?
And maybe even life!
You know, my idea is to show atmospherical composition of the T (T7/8 V - T9.9 V)/Y class brown dwarfs. Just because... did you see the Y class[size=100] brown dwarfs,? They look COMPLETELY like gas giants! We can try to do an experiment and mark some of them with the green font! This must worth it - a star with life![/size]

General suggestions for SpaceEngine

Posted: 27 Jan 2019 05:29
by A-L-E-X
We have been talking about the possibility of life on brown dwarfs and what it might be like!

General suggestions for SpaceEngine

Posted: 28 Jan 2019 03:46
by SpaceSpade
And what about making them habitable in SE?

General suggestions for SpaceEngine

Posted: 05 Feb 2019 12:23
by peperlake
Hello. Just wanna say how much I enjoy space engine! Spectacular! I think in game mode it would be nice to be able to move the space ship between all the different orbit orientations without your view changing. I get totally disoriented after the ship spins around. It would be so much easier to pilot manually if the view did not change. I'm no programmer so I feel a bit silly making suggestions. Hell there is probably a way to do what I'm saying, I just do not know how yet. I'm totally digging space engine though! This program should be in every school!!!!

General suggestions for SpaceEngine

Posted: 05 Feb 2019 13:49
by Mr. Abner
Right-click on the ship you are flying, a menu will pop up. I don't remember the exact wording in the options, but in the bottom section, one item will be selected — I think the middle one, says something like "Rotate with object" — what you want is the one just above it. Click on that and your view will remain fixed while the ship rotates.

The small issue with this is that if you switch camera views (the "4" key) or between multiple ships (or other objects for that matter), the default mode will always be "Rotate with object".

General suggestions for SpaceEngine

Posted: 05 Feb 2019 17:56
by N3cronium
It would be interesting to have binary supermassive black holes in the center of some galaxies since there are a few galaxies identified to have two black holes in their galactic cores. However I'm not sure about how accretion disks would work in such scenario.

General suggestions for SpaceEngine

Posted: 02 Mar 2019 00:13
by Stellarator
It would be realistic if the parameters for life on planets were too also include the "Subterranean" biome.

As an example, it has been proposed by astrobiologists that if life were to reside on Jupiter's moon Io, it would be extremophile bacterium clinging to the moist walls of lava-tubes beneath the sulfurous surface. Thus this would be "Subterranean" life. I know that "Terrestrial" life is already a parameter, but I don't think this biome extends much beneath the topsoil of a planet. 

General suggestions for SpaceEngine

Posted: 04 Mar 2019 21:51
by A-L-E-X
I think we've found life a few miles below the surface- nematodes found by a drilling team!  Remember those sci fi novels and movies about dinosaurs existing near the center of the Earth (like Journey to the Center of the Earth)? haha  that would be fantastic if they had their own Lost World!

Will the Green Flash be in 0.990?  I couldn't do it in 0.880.  It's supposed to be an atmospheric phenomenon unique to Earth where the last few of the rays of the sun prior to sunset turn a vivid green.  You need a flat horizon and a clear sky to see it!  It's supposed to be the most vivid green anyone has ever seen!

General suggestions for SpaceEngine

Posted: 05 Mar 2019 18:23
by HarbingerDawn
A-L-E-X wrote:
Source of the post Will the Green Flash be in 0.990?

No, this requires complex atmospheric optical effects that are far into the future for SE. I've never used any program that has simulated such a thing.