Questions tagged [universe-sandbox]

Questions regarding Universe Sandbox, software that simulates astrodynamics.

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14 votes
1 answer
11k views

Is Universe Sandbox 2 realistic?

Universe Sandbox 2 is the second installment of Universe Sandbox that is available on Steam. It is an educational simulation game based on astronomy and anything space, it ranges from supernova ...
HotSaucey's user avatar
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1 vote
1 answer
1k views

Is a General Relativity approximation available in Universe Sandbox (1 or 2)?

This answer points out that including General Relativity in a simulation can be computationally intensive and may not be present in Universe Sandbox. However, answers to How to calculate the planets ...
uhoh's user avatar
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2 votes
2 answers
370 views

Why doesn't smashing larger and larger bodies incrementally into a rocky planet create a star?

Let's start with a stationary Earth. If we smash a few Mercury-sized objects into the Earth, the Earth begins to accrete mass. Repeat this step with larger and larger objects, until we start impacting ...
WarpPrime's user avatar
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9 votes
3 answers
1k views

Are there some (simple) mathematical models which can simulate the cellular/web structure of the universe?

To visualize the structure of a solar system we have some simple mathematical model: Planets orbiting around a Star in circular motion. If we want to be more precise the circle becomes a ellipse, the ...
J. Doe's user avatar
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6 votes
1 answer
397 views

At high temperatures, do planets glow like blackbodies?

I've been messing around in Universe Sandbox for a while and noticed that as a planet heats up, it glows like a blackbody starting at ~4000 K. Is the simulation here accurate, or do very hot planets ...
WarpPrime's user avatar
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1 vote
2 answers
588 views

Universe Sandbox 2 accurate representation of gravity

I've been playing Universe Sandbox for a while now and I have never been able to make a near Earth asteroid collide with it. By "make" I mean, simulating billions of years of known, near Earth objects ...
Fus Ro Dah's user avatar