Universe Sandbox

Universe Sandbox => Universe Sandbox | Support & Bugs => Topic started by: smjjames on October 31, 2014, 08:17:59 AM

Title: [BUG] Sun does not go through red giant phase in old age
Post by: smjjames on October 31, 2014, 08:17:59 AM
Now, I'm not sure exactly when the red giant phase begins for the sun, but in the future, by 10 billion years, Mercury and Venus will be gone, Earths fate is a bit iffy whether it becomes swallowed or not. In the stellar evolution sim (and when I increase age in the solar system sim), while it does increase in size a bit and redden a little, it is far from even swallowing up Mercury.

I just consider this an important bug that needs to be fixed.
Title: Re: [BUG] Sun does not go through red giant phase in old age
Post by: MTd2 on December 04, 2015, 10:41:54 PM
I think this is, along with the black hole size bug, would be something easy to fix. It's basically just scaling the object, like when someone adds matter to a planet, or it suddenly adds matter, and it slowly grows.
Title: Re: [BUG] Sun does not go through red giant phase in old age
Post by: vmorgo on December 23, 2015, 05:56:29 AM
I think this has been fixed in Alpha 17 and later.  Give it a try and let us know, please. 

Note:  When "aging" a star, I have found the best technique is to age it to the point where it starts to grow visibly, then age it very slowly and see what happens.  I haven't tried this yet, so I'll have to check when i get back home. 

I'm currently running the optional beta 18c8, though the latest "official" alpha is 17.1.  (I guess that makes mine an "alpha beta".... ;-)

A./
Title: Re: [BUG] Sun does not go through red giant phase in old age
Post by: C7 on December 23, 2015, 12:03:18 PM
We're in the middle of some major rewrites to the handling of stellar evolution, that will address a lot of the shortcomings and limitations of the current system.

We'll hopefully have some more information on that as the feature nears completion.