I don't know if it will be ever applicable to SpaceEngine, but this interesting piece of open source code, developed by two astronomers, seems to be very promising in handling billions of data quickly and without necessarily involving external server queries. I mean, just look at results with a local 10% of Gaia DR1: https://vaex.io/#gaia

The full one is only 351GB.  I'd download all that if it were all available in SE lol. I'd finally have a use for my 10 year old HDD and be able to fill it with something. Even the 10% would be pretty awesome.

New Titan map.
Restored version of the 2013 USGS mosaic by Ian regan :

https://www.flickr.com/photos/[email protected] ... otostream/

A non-language dependent user database. So 'user-db.cfg' instead of 'user-eng-db.cfg' or 'user-ger-db.cfg'.
In my opinion, there is no reason to make this database language dependent since it is only used by one user.
But I, for example, occasionally change the interface language between English and German. So if I make any entries in English, these entries are of course not available in German. And vice versa.
If that is not too complicated.

this could be...  the gas giant's surface

Wow! yes that would be awesome.  One of my childhood disappointments was the Galileo atmospheric probe lacked any imaging instruments.   One of those dreams as a kid and even now is to see gas giants atmospheres from within the clouds.

Hi I have 2 [color=#ffffff][font=verdana, arial, helvetica][size=85]suggestions that I miss them A Lot in SE[/size]
[/font][/color][color=#ffffff][font=verdana, arial, helvetica][size=85]First, the [/size]planets, M[size=85]oons and Stars layers [/size][/font][/color]Diagram[color=#ffffff][font=verdana, arial, helvetica][color=rgba(0, 0, 0, 0.87)][font=arial, sans-serif][size=175] [/size][/font][/color][/font][/color][color=#ffffff][font=verdana, arial, helvetica][size=85]that I wish it appear in wiki window inside the space engine[/size][/font][/color][color=#ffffff][font=verdana, arial, helvetica]
[img]https://image.ibb.co/nbLLpy/opo1509e.jpg[/img]
[img]https://image.ibb.co/b60QNJ/Jupiter_structure.jpg[/img]






second[size=85], the [/size]Habitat[size=85] zone for the star [/size]system[size=85] like the one is used in [/size][/font][/color]NASA Eyes on Exoplanets I miss it in SE

[url=https://ibb.co/jGwApy][color=#ffffff][font=verdana, arial, helvetica][img]https://preview.ibb.co/cggMwd/Ywd_Dk_A96k_Swa_SREKZvi3.jpg[/img][/font][/color][/url] 
[img]https://image.ibb.co/diAaNJ/trappist_1_nasa.jpg[/img]

Suggestion; Point to point distance measuring or at least latitude and longitude lines for the planets.

Hi I have 2 suggestions that I miss them A Lot in SE
First, the planets, Moons and Stars layers Diagram that I wish it appear in wiki window inside the space engine
https://image.ibb.co/nbLLpy/opo1509e.jpg
https://image.ibb.co/b60QNJ/Jupiter_structure.jpg
https://image.ibb.co/b60QNJ/Jupiter_structure.jpg
https://image.ibb.co/b60QNJ/Jupiter_structure.jpg


second, the Habitat zone for the star system like the one is used in NASA Eyes on Exoplanets I miss it in SE
https://preview.ibb.co/cggMwd/Ywd_Dk_A9 ... EKZvi3.jpg
https://preview.ibb.co/cggMwd/Ywd_Dk_A9 ... EKZvi3.jpg
https://image.ibb.co/diAaNJ/trappist_1_nasa.jpg

https://image.ibb.co/diAaNJ/trappist_1_nasa.jpg

[Edited for readability]

I suggest that a planet should have different temperatures depending where you are on the surface and the temperature displayed should rather be the average temperature of the planet. The temperature variations can vary depending on how much atmo pressure the planet has. A dense atmosphere planet might have an uniform temperature or have min/max temperatures close to the displayed temperature where however a planet with little or no atmosphere might be scorching a place and freezing another place.

[color=#16a085]Quality of life suggestion:[/color]
Currently while editing a planet or star via the in-game editor the [color=#ffffff]export[/color] option always creates a new file, so it would be nice to have a "Save" button for non-procedural planets.
While by no means important, it saves time when editing a system repeatedly to try out different settings, especially if a restart is required to fully apply the changes.

Please make creating galaxy models easier.

I have a suggestion that may or may not be easy to integrate into the game system:

Since the newest add-ons for the recent editions of SE are planetary compositions and chemistry, I was wondering if it is possible to add a detail on the planetary window regarding the amount of radiation (like gamma, radio, microwave, infrared and visible light frequencies) received and present on the planets surface (from beyond the atmosphere and by that generated by radioactive materials in the planets crust), and upper atmosphere (from the radiation belts and particles from beyond)?

Since units of radiation are non-standardized, and dependent on the type of radiation in question, measuring the levels might be tricky to implement. I could imagine it also being fairly region-dependent, since some areas of the universe have more radiation buzzing around (example, the central regions of the Milky Way).

On that topic, what about measuring what radiations are emitted by a particular object in space (excluding planets and asteroids) such as stars and black-holes?

As I said, I don't know how easy such a detail may be integrated in SpaceEngine or if that is planned in the future.

You really should do something with DMD Branefold and partner up. You can do curvature and gravitational pull of light rays around the sun and blackholes properly and when you move really fast between planets you can have luminal abberation. DMD Branefold is the fastest raytracer on the market and they're working on purely vertex transforming projections too.

OUTERRA:

Hi, I found this intriguing program, in this link: http://www.outerra.com/ 

https://www.youtube.com/watch?v=DlKz6r1uCfw

WOW! It's so realistic! Not only terrain like Space Engine, but volumetric clouds, more realistic water with waves, vegetation and ambient sound, and it's still the demo! A shame it only focus on Earth!

Imagine if Space Engine had all those features! Well, Space Engine already have the advantage that allows you to explore the universe. But think of adding all those things too! Imagine riding a real car or flying using real airplane in an alien planet, like on TRAPPIST-1 planets!

Combine the two and Space Engine will turn to be the best simulator EVER!