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How does a program store info?

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I''ve been thinking lately about space TBS games and how they aren''t very realistic. Specifically their size. Usually a galaxy in a game like this has about 100 stars. That''s not very many for an entire galaxy. Of course we could argue that its only a small part of a galaxy. That solves that problem, but I was thinking that wouldn''t the game be better if the part of the galaxy were bigger. So I started to wonder what would be a good size and I decided on 1 billion cubic light years. That''s still about a million times less than the real galaxy. OK, now on to my question. Would something like this be possible? I''m not exactly sure about how everything in a computer program works, but it was my understanding that a program runs in RAM. So even if I could somehow store all the data about each cubic light year in a single byte, that would still require 1 GB of RAM. Do I have this right or am I missing something?

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Guest Anonymous Poster
In games, reality is not stored directly, for something
like this it would be a linked list or a database.
And anything which can be viewed in the game you just store
the object''s co-ordinates and when you view a particular
point in space you just display whatever has coordinates in
the area.

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