Ultimate space simulation software

 
A-L-E-X
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General suggestions for SpaceEngine

31 May 2021 18:02

Rulix` wrote:
thanks for the link, Doc is one of my favorite people and he presents some really good ideas about how (what I call omniverse rather than multiverse) would work.

What you call? I've been using that word since 2009 in my series "The Origin of the Omniverse"
 
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Mosfet
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General suggestions for SpaceEngine

01 Jun 2021 04:09

A-L-E-X, I banned the spambot and deleted those posts because they were quoting your own posts from 2020.
"Time is illusion. Lunchtime doubly so". Douglas N. Adams
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A-L-E-X
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General suggestions for SpaceEngine

01 Jun 2021 18:00

Thanks!  It's hard for me to tell who's spam from who isn't, unless we just go by low number of posts.  I see we've got a lot of people with just 1-2 posts, I wonder if they're all spam?
 
jjliang
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General suggestions for SpaceEngine

02 Jun 2021 17:57

Have every real Earth satellite, space telescope, manned space capsule, space station, and space probe be included. Also, have the entire life cycle of the Solar System, from protostar to white dwarf, be simulated. Special points of interest include the formation of the Moon, continental drift on Earth, and the final destruction of the Solar System as the Sun ages into a red giant.
 
A-L-E-X
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General suggestions for SpaceEngine

04 Jun 2021 23:27

Autopilot for aviation mode!  This should be fairly easy to accomplish.  I like making long 12 hour videos and while this is easy to do in space flight mode (you just have to calculate speed and distance to your destination and just let it run) it can't be done during planetary fly overs because you tend to crash on the surface or fly off into space if you're not constantly adjusting the controls and I am NOT going to be sitting at my computer for 12 hours lol.  There should be an autopilot mode that maintains a specific distance above the surface of a planet or moon while flying over it so that up to 12 hour videos can be made capturing planetary landscapes and day/night transitions.

In addition to that something else that should be fairly easy to do is a directional compass for when flying over planets and moons.
 
jjliang
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General suggestions for SpaceEngine

19 Jun 2021 05:38

Askaniy's True Color Tools should be implemented to make all Solar System objects be recolored to have their "actual" colors.
 
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N0B0DY
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General suggestions for SpaceEngine

21 Jun 2021 03:24

Sorry if this has been suggested before - its an old one:
While controlling a ship on the left-hand top side of the screen where the details of the selected object is shown, in this case the ship's details, the nearest body is actually the gravitational influence body. So it should say Influence body as on the top right hand side where the orbital elements are shown. In addition a nearest body indicator could also be displayed for e.g. directly bellow or above the influence body, which would indicate the actual nearest body to the user's controlled ship. Its not a big deal but its been around for a few years now and since SE aims for scientific accuracy I think it could be a nice little tiny fix :):
Image
 
jjliang
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General suggestions for SpaceEngine

28 Jun 2021 17:44

There should be a timelapse feature to show the full evolution of the Solar System from protostar to white dwarf, complete with continental drift on Earth.
 
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longname
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General suggestions for SpaceEngine

04 Jul 2021 09:47

jjliang wrote:
There should be a timelapse feature to show the full evolution of the Solar System from protostar to white dwarf, complete with continental drift on Earth.

Your posts are beginning to lean into spam. Vlad himself wants this one day himself, you don't need to keep repeating that you want these things in SE.
[dah<500,26>dah<180,14>dah<180,21>dah<500,19>dah<180,26>dah<500,21>]
 
jjliang
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General suggestions for SpaceEngine

04 Jul 2021 16:55

Do you think the Hertzsprung-Russell diagram will ever be incorporated into this software? Or even a feature where we actually get to see what the planets' interiors look like?
 
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longname
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General suggestions for SpaceEngine

05 Jul 2021 08:03

jjliang wrote:
Source of the post Do you think the Hertzsprung-Russell diagram will ever be incorporated into this software?

Maybe. We don't know.
jjliang wrote:
Source of the post Or even a feature where we actually get to see what the planets' interiors look like?

Relatively pointless.
[dah<500,26>dah<180,14>dah<180,21>dah<500,19>dah<180,26>dah<500,21>]
 
RandomCanadian
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General suggestions for SpaceEngine

05 Jul 2021 11:12

longname wrote:
jjliang wrote:
There should be a timelapse feature to show the full evolution of the Solar System from protostar to white dwarf, complete with continental drift on Earth.

Your posts are beginning to lean into spam. Vlad himself wants this one day himself, you don't need to keep repeating that you want these things in SE.

A much more useful feature would be if this accurately reflected stellar characteristics as a function of age, mass and metallicity (this last thing doesn't appear to be simulated at all). There are likely plenty of easily accessible papers on the subject. An up-to-date model (starting at the pre-MS stage) appears to be hosted up on the site of the Université de Genève (there are capabilities to manually interpolate between known evolutionary tracks). I don't know if they'd be willing to share their code, though.
A more accessible route might be via the code presented in Hurley J.R., Pols O.R., Tout C.A., 2000, MNRAS, 315, 543.  - Hurley has a Fortran version up on his page here (implementation here if you want to toy around with that a bit). He starts at the ZAMS (using values for luminosity and radius at that point from Tout C.A., Pols O.R., Eggleton P.P., Han Z., 1996, MNRAS, 281, 257.. There's also a couple of papers by Paxton et al. (201120132015).
I say this because the game currently doesn't appear to implement this (or even the very basic "increase of luminosity of MS stars as a function of age"). For example, picking a random star of higher than solar mass (picture attached) and calculating with both models gives a luminosity at the given age of about about 5.33-5.34 Lsun for the F5V star, much above the given 4.62 (which is actually below the ZAMS luminosity - about 4.8 - of a solar metallicity star in both models).
Another issue I have is with close-in planets around white dwarfs, and the relatively high prevalence of jovian planets around low-mass red dwarves, but that's a whole other post.
Attachments
Screenshot (239).png
 
RandomCanadian
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General suggestions for SpaceEngine

05 Jul 2021 11:16

And the simple thing about the above is it only needs be computed once (on generation of the star - even high-mass stars don't jump all around the HR diagram on human timescales) and it can then be kept as a static value.
 
RandomCanadian
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General suggestions for SpaceEngine

05 Jul 2021 16:56

Nevermind me having taken an older version on my laptop when I looked at this earlier, the observation about luminosities vs. age/mass/metallicity still holds even in the latest: the star here should have about (depending on the model employed to simulate this) 2.9-3.0 Lsun...
 
A-L-E-X
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General suggestions for SpaceEngine

05 Jul 2021 21:29

longname wrote:
jjliang wrote:
Source of the post Do you think the Hertzsprung-Russell diagram will ever be incorporated into this software?

Maybe. We don't know.
jjliang wrote:
Source of the post Or even a feature where we actually get to see what the planets' interiors look like?

Relatively pointless.

Vlad said that he wants an H-R diagram in the program at some point, it would be useful to find stars in a field of view by clicking on a speck in the H-R diagram rather than having to tediously go through a field to find sunlike stars or extreme stars.  For example, I use the H-R diagram in SNPP to find the most luminous stars within a given field.

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