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Changelog for Patch 25.1 (20 April 2020/added 22 April 2020):

Desktop & VR

Improvements
- Improve atmosphere lighting when lit by multiple light sources
- Revised the visuals of hot impact craters and heated objects
- Improve interaction between objects and supernova clouds
- Orbit previews now display correctly when adding an object around a moving body
- Some moons that were previously created at -273°C will now be initialized at correct temperatures

Fixes
- Fixed an issue where fragments from a collision would be launched at an incorrectly high speed
- Fixed an issue causing some objects to be stuck at -273°C if too many objects were added to a simulation
- Fixed an issue causing a row of surface grid data to be incorrect on some minor objects
- Fixed an issue causing jagged shadow edges to be seen at certain viewing angles
- Fixed issue where fragments that are further fragmented are named incorrectly
- Fixed an issue where the first objected added, when paused, would appear to have a layer of ice until the simulation was unpaused
- Fixed two simulations, “Earth Solar System” and “Jupiter Solar System”, which were initializing with incorrect objects
- Fixed issue with adding object “Whole Systems” where you could add multiple object systems at once
- Fixed issue causing star temperatures to fluctuate
- Fixed issue causing atmospheres on some random rocky planets to not be visible

Desktop

New
- Added City Lights toggle for all rocky planets and moons and a dropdown to define their visibility behavior
- Added procedural city lights and a randomization setting
- Added a “Blog” button to our Home menu

Improvements
- Revised units used for reporting Magnetosphere Size and Pressure
- Added Age property to galaxies
- Improve progress indicator when saving simulations so the application no longer appears to lock up when saving
- Added a screen fade when quitting the application

Fixes
- Fixed issue where shadow on/off settings would not always be applied correctly
- Some text in the Property panel that was previously not selectable in Translate mode is now selectable
- Fixed issue where the simulation grid would disappear when moving the camera if no objects were present
- Fixed issue where the visual feedback of the Force tool was not displaying
- Fixed issue where Add panel would spontaneously close if opened after the Edit panel
- Minor fix to the Gravity settings slider found in the Sim Settings panel
- Minor UI fix to remove an unintended expansion icon


Standalone installers updated (25.0.3 ⇒ 25.1): 22 April 2020.
Changelog for Patch 25.2 (02. July 2020/added 06. July 2020):

Update 25.2 is a minor update that brings even more appearance options, this time to clouds, galaxies, and asteroids. We’ve also improved energy transfer calculations, laser settings, asteroid visuals, and provided various other bug fixes.

Most of the team has been hard at work on our upcoming major updates, but we didn’t want you to wait for these features and bug fixes. Keep an eye out for Update 26 (Coming Soon™) which will bring major improvements to our user interface and VR implementation.

Cloudy with a Chance of Purple

Change the color of clouds, galaxies, city lights, and asteroids. Toggle snow visuals on or off to help distinguish snow from sea ice.

Asteroid Makeover

Asteroids received a complete visual overhaul and color correction.

Improved Energy Simulation

Energy Flow calculations now including lasers, explosions, and impacts. Learn more about Energy Flow from Home > Guides > Science > Energy and Heating in Depth.

Featured Fixes
o Simulations with broken surface data can now be opened
o City Lights no longer appearing incorrectly on some rocky objects
o Black hole radius can now be manually changed as expected

Standalone installers updated: 25.1-1 (39166) => 25.2 (39481) on 06. July 2020.
Changelog for Patch 26.0 (29. October 2020/added on 30. Oct. 2020):

Update 26 brings the full Universe Sandbox desktop experience to virtual reality (VR). We redesigned the bottom bar and made visual improvements to collision fragments, rocky planets, and liquid water.

Full Desktop Experience in VR

Universe Sandbox VR now matches the desktop experience and will maintain feature parity moving forward. You can now use virtual hands to manipulate planets, edit properties, or use separate tools in each hand.

Reimagined User Interface

Featuring a customizable bottom bar, our improved user interface makes Universe Sandbox easier to use, more discoverable, and improves support for extra small screens.

Improved Visuals

Collision fragments have new, high-definition graphics and lighting. Elevation maps for rocky planets have more detail. Water graphics now show waves and better light reflection. Asteroids and collision fragments have new highly-detailed dynamic models with better lighting.

This update includes 20+ additions and 50+ fixes and improvements.

Standalone installers updated: 25.2 (39481) => 26.0.1 (42345) on 30. October 2020.
Changelog for Patch 26.1 (20. November 2020 / added on 23. November 2020):

Brown Dwarf Transitions

We’ve made significant improvements to the simulated transitions of gas giants into brown dwarfs and stars, driven by a newly simulated Fusion Power energy property. Learn more about fusion power and brown dwarfs in our new guide: Guides > Science > Are Gas Giants Failed Stars?

More Color Customization

The color of water on all planets, and the color of vegetation on Earth, are now customizable via Properties > Appearance.

Laser Improvements

Laser presets have been reorganized, and we’ve added a new Push Water setting in the Laser panel. While not entirely realistic, this is a fun way to play with the water simulation on an object’s surface. Try out the “Wave Maker” laser preset to create massive waves in a planet’s oceans..

Standalone installers updated: 26.0.1 (42345) => 26.1 (42866) on 23. November 2020.

For further information see Blog of the Developers:
* http://universesandbox.com/blog/category/development/
and the full list of changes of the versions:
* https://docs.google.com/document/d/1TTsJL-ddM_i5RjfnQV5_R-hocRCin6hxAiCuVlytRtA/edit#heading=h.9r4jzl95cexa
Post edited November 23, 2020 by JMB9
Ending 2020 with a Bang | Update 26.2
Craters from impacts, lasting surface damage, and voluminous explosions all come together in Update 26.2 to close out the year!
Posted: Wed, December 23, 2020 @ 2:44 AM CET

Surface Damage & Craters
Molten and heated areas on an object’s surface will appear scorched after cooling,
with visible craters in the aftermath of collisions.

Explosions
Rocky objects more accurately vaporize into hot, dense gas clouds when exploded.
The simulation of gas particles, which slowly expand over time, is more realistic,
and results in dramatic debris clouds after impacts.
We’ve also added a Detonation Delay setting to the Explode tool.

Two-Handed Gestures in VR
Move, scale, and rotate the universe using intuitive gestures with both hands and the grip buttons.

Please report any issues on our forum (Steam), on Discord, or in-game via Home > Send Feedback.

Check out our full list of Update 26.2 changes:
https://docs.google.com/document/d/1TTsJL-ddM_i5RjfnQV5_R-hocRCin6hxAiCuVlytRtA/edit

Source: https://store.steampowered.com/news/app/230290/view/2907602083641499120

GOG Offline Installer:   26.1 (42866) => 26.2.1 (43662) on 31. Dec. 2021

===
Splish, Splash, Filling a Bath | Update 26.3
Drastically increased collision fragments and framerates, overhauled planetary water distribution,
plus dozens of improvements come together in Update 26.3.
Posted: Thu, February 25, 2021 @ 2:15 AM CET

Oceans Filling Like a Bathtub
Water fills a tub from its lowest point - why not on a planet? Oceans now start at the lowest elevations and
fill valleys like you would a bathtub, creating more realistic-looking continents and oceans.
(Previously liquid water would “precipitate” evenly across the surface.)

Buttery Smooth Collisions & Particles Aplenty
Major performance improvements have resulted in epic collisions with double the particles.
Fragment generation is substantially more consistent across various simulation speeds.
Collisions now perform much more smoothly: in many cases we’re seeing as much as triple framerate increases.

More Highlights
  o Fixed the “annoying bug” that darkened customized planet surfaces
  o Ice & Snow, which are simulated separately, now have color options
  o Avast, Matey! Change an object’s Sea Level in the properties panel
  o Cleaned up the object property panel and added new action buttons

Please report any issues on our Steam forum, on Discord, or in-game via Home > Send Feedback.

Simulation
New
  o “Stabilize Temperature” and “Stabilize Phase” are two new surface simulation functions in an object’s
     Property panel. Instantly set the temperature of the surface or the phase of the water (gas, liquid, or solid ice)
     to their steady state. This is useful to see how a planet will settle over time, rather than needing to speed up time.
  o Added an editable “Sea Level” property to an object’s Surface tab. Use this to raise or lower the water
     level on an object’s surface by “filling up” the oceans from the bottom up. This is a much more intuitive
     and engaging way to add water to an object’s surface than was previously possible.
     Previously, water was added as a uniform sheet across the entire surface.
  o Added a toggleable “Fusion Power” to the Simulation Settings

Improvements
  o Major performance and optimization improvements to surface simulation, collision heating,
     n-body calculations, and fragmentation. Collisions in particular perform much more smoothly than before.
  o Improved the consistency of fragment generation during collisions at a variety of simulation speeds.
  o Light energy is now correctly conserved when scattering off the surface of objects,
     resulting in more realistic, less shiny surfaces.
  o Improved the simulation of light absorption in water, yielding darker deep water and greener shallow water
  o Revised default water color to be a more saturated blue, reflecting how satellite photos of Earth are often represented
  o Improved the water generation on random rocky planets, resulting in more planets with defined continents and oceans
  o Added relativistic kinetic energy to collision calculations. Only relevant at speeds near the speed of light
  o Revised the initial size of Earth’s ice caps

Fixes
  o Fixed an issue where many fragments created during a collision would immediately re-collide with the colliding object. This now results in much higher particle count in the aftermath of collisions.
  o Fixed an issue that was causing a error in momentum transfer during collisions
  o Fixed in issue where newly created objects could adopt surface elevation information from other objects
  o Laser previously affected an area slightly larger than the intended size. Now the laser affects the correct area size, as designated by the visual laser tool reticle.
  o Venus will no longer produce volatiles after opening "Planets Between Earth & Moon" sim
  o Fixed an issue where objects could be heated prior to being added to the simulation
  o Fixed an issue where objects could still lose mass to fragmentation with “Create Fragments” turned off
  o Fixed an issue where the heated area on an object’s surface after a collision would jump to a different size
  o Fixed an issue that was causing exoplanets to generate with too much water
  o Fragments that were spawning slightly oversized are now corrected

User Experience
New
  o New styling of many action buttons in an object’s Property panel

Improvements
  o Major improvements to saving. This should reduce the occurrence of corrupted save data, and overall improve the stability of saving and loading simulations.
  o Zooming on surface data maps now zooms at the cursor’s position
  o Snow is now correctly visually represented on top of ice
  o The distance at which Surface Lock enables when moving close to an object has been revised
  o Improved object selection logic, preventing the selection of mostly-invisible gas clouds when they are too close to the camera
  o Improved the colorization of objects when using non-realistic Color modes
  o Improved the visibility of the Laser tool reticle, and added a missing reticle on gas giants
  o Improved color rendering of heated gas giants
  o Revised styling of expanders in the Property panel
  o Revised styling of the scrollbar on surface data views
  o Reorganization of the Property panel Overview and Surface tab
  o Reorganization of tabs in the Open panel, notably moving My Sims to the front
  o Habitable zone visibility can now be toggled by the hotkey H, which is editable in the keybinds.
  o Removed the English-only abbreviations from non-English languages that could sometimes cause awkward translations. Cleaned up the abbreviations used in English.

Fixes
  o Fixed the behavior of “Auto” selection in dropdown menus with auto-selecting options. “Auto” can now be correctly toggled on and off.
  o Fixed an issue where atmospheres and clouds would be incorrectly tinted darker when customizing the underlying surface colors
  o Fixed the sorting behavior for simulations in the Open panel
  o Toggle buttons added to the hotbar will no longer incorrectly switch state when loading a new simulation
  o Particles now move smoothly when exiting Chart mode
  o Fixed an issue where an unplaced object hologram could be selectable
  o Atlas Resolution now correctly resets to default when all settings are reset
  o Fixed an issue where an empty sim would report having 1 object in the Stats panel
  o Fixed an issue where Slowest Body wouldn’t be reported correctly in Simulation Settings
  o Fixed an issue where it would be possible for the mouse wheel to zoom in Universe Sandbox while using the mouse in a different application
  o Fixed an issue preventing Surface Lock from working during a guide
  o Fixed an issue where the strongest attractor in a simulation could be given an orbit parent (26.3.1)

Content
New
  o The color of ice and snow can now be customized in an object’s Appearance tab

Improvements
  o Revision to Collision simulations to ensure the impact collision consistency
     across various simulation speeds

Source: https://store.steampowered.com/news/app/230290/view/3020197857778711796

GOG Offline Installer:   26.2.1 (43662) => 26.3.1 (45200) on 27. Feb. 2021
Fast & Flurrious | Update 27 - Major Update
Posted: Tue, May 4, 2021 @ 1:44 AM CEST

Snow simulation improvements, more detailed temperature maps, better performance, new cloud visuals, and
more are rolled up into Update 27.

The featured image shows what would happen if the Earth was tidally locked, where one side of the planet
always faces the Sun.

Superior Snow Simulation
We’re now keeping track of snow so that it falls and melts more realistically.
Previously it disappeared immediately if the water vapor got too low.
There’s also more accurate snow and ice formations on newly-created random rocky planets!

Taking the (Surface) Temperature
Temperature maps have gotten a facelift with the addition of temperature calculations adjusted by elevation.
Previously temperature maps were only shown at sea level, even if the elevation data was above sea level.

Downscaling to Benefit Non-gaming Hardware
Render Scale has been added as a new graphics setting. This allows you to run the simulation at a lower resolution
while keeping the interface looking crisp. The automatic settings have also been updated for improved performance
on lower-end hardware.

More Highlights
  o More customization for cloud visuals on rocky planets, including adjustable coverage and opacity
  o We’ve added new shapes to our Human Scale Objects
  o ...and Human Scale Objects can now have custom colors
  o View > Object Visibility has been added so that you can see all objects that would normally be impossible to see at realistic scales. You can also really blow them up with advanced settings!
  o The Add Panel has been restyled to accommodate smaller screens and to prepare the panel for future plans
  o Heating from stars and supernovae is now smoother at high simulation speeds for all spinning objects
  o Our guide system now provides better assistance to new users with Guide Rails
  o Curved trails are now more precisely rendered as at high simulation speeds
  o Dyslexia-friendly font options have been added under Settings > General > Accessibility

This update includes 16+ additions and 38+ fixes and improvements.

Please report any issues on our Steam forum, on Discord, or in-game via Home > Send Feedback.

Check out our full list of Update 27 changes:
https://docs.google.com/document/d/1TTsJL-ddM_i5RjfnQV5_R-hocRCin6hxAiCuVlytRtA/edit#heading=h.9r4jzl95cexa&snr=1_2108_9__2107

Source: https://store.steampowered.com/news/app/230290/view/3038217963778653721

GOG Offline Installer: 26.3.1 (45200) => 27.0.2 (46870) on 07. May 2021
Two small Updates without changelog:

GOG Offline Installer: 27.0.2 (46870) => 27.0.4 (47039) on 14. May 2021

GOG Offline Installer: 27.0.4 (47039) => 27.0.5 (47807) on 15. June 2021

One may have a look at:
   * https://docs.google.com/document/d/1TTsJL-ddM_i5RjfnQV5_R-hocRCin6hxAiCuVlytRtA/edit#heading=h.mkw8qyki3edc
for further information ...
Post edited June 16, 2021 by JMB9
Clouds in Motion | Update 27.1
Posted: Mon, June 21, 2021 @ 9:34 PM CEST

Cloud speed is now simulated based on an object's temperature and rotation speed. Surface simulation performance
improvements, an Appearance interface redesign, adjustable planetary rim lighting, and more round out this minor update.

The feature image shows a laser heating up the Earth to speed up the cloud rotation with no planetary rim lighting.

Simulated Cloud Speed
Cloud speed is now simulated based on an object's temperature and rotation speed as part of our continued incremental
improvements of clouds. Check out our new Clouds guide for a tour through our entire cloud system:
Guides > Science > Clouds.

Easier Appearance Editing
As part of our continued user interface improvements, the Properties > Appearance tab has been redesigned to combine
color customization with visibility and other options to make changing the appearance of an object even easier.

More Highlights
   o Surface Simulation has been improved to update only objects that are changing each frame,
      improving performance for simulations with many objects
   o Created simulation of NASA’s Juno spacecraft flyby of Ganymede in June 2021:
      Open > Historical > Juno Flyby of Ganymede in 2021
   o Star glows correctly fade as you get farther away from them when Object Visibility is set to Realistic again
   o Added Atmosphere Density and Speed of Sound Properties to Properties > Surface > Atmosphere
   o Rim Lighting can now be adjusted under View > Object Visibility > Rim Lighting

This update includes 8+ additions and 21+ fixes and improvements.

You can also check out our 2021 Roadmap to learn more about what we’re currently working on!

Please report any issues on our forum, on Discord, or in-game via Home > Send Feedback.

Check out our full list of Update 27.1 changes:
   * https://docs.google.com/document/d/1TTsJL-ddM_i5RjfnQV5_R-hocRCin6hxAiCuVlytRtA/edit#heading=h.9r4jzl95cexa&snr=1_2108_9__2107

# Source: https://store.steampowered.com/news/app/230290/view/2984179208744953616

GOG Offline Installer: 27.0.5 (47807) => 27.1.1 (48129) on 28. June 2021
Atmospheric Adjustments | Update 27.2
Posted: Mon, August 2, 2021 @ 4:52 PM CEST

Update 27.2
You can now change specific simulation interactions, like gravity and collisions, on a per-object basis!
This minor update also includes simulated atmosphere opacity (a measure of how hard it is to see through
the atmosphere), bug fixes, and more.

Individual Object Simulation Manipulation
The ability to turn off specific simulation interactions on a per-object basis has been added to all objects
in Properties > Overview.
We plan to add to this over time, and we hope you enjoy creating all kinds of crazy scenarios
with these options as much as we do!

Opaque Atmospheres
Atmosphere Opacity is now simulated based on an object's properties, like Radius and Atmosphere Mass.
Learn more about this new feature in our Atmospheres guide under Guides > Science > Atmospheres.

More Highlights
   o Polar ice caps on random rocky planets are now informed by the water depth
      around the poles and are no longer circles
   o Opening multiple surface data views no longer causes a noticeable reduction in performance

This update includes 7+ additions and 13+ fixes and improvements.

Check out the full list of What's New in Update 27.2:
* https://docs.google.com/document/d/1TTsJL-ddM_i5RjfnQV5_R-hocRCin6hxAiCuVlytRtA/edit

Please report any issues on Discord (https://discord.com/invite/jYBAejE), or in-game via Home > Send Feedback.

# Source: https://store.steampowered.com/news/app/230290/view/2961664381373312653

GOG Offline Installer:
   o Lin:   27.1.1 => 27.2.1 (48984) on 04. Aug. 2021
   o Win: 27.1.1 => 27.2.1 (48982) on 03. Aug. 2021
   o Mac: 27.1.1 => 27.2.1 (48983) on 04. Aug. 2021
Post edited August 04, 2021 by JMB9