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[–] 3689576? 1 point 1 point (+2|-1) ago 

If you replace the Sun with a black hole with exactly the same mass then everything would be the same (gravitationally) just very dark.

If you put 3 super-earths between Earth and Mars then they would interfere and all planets would probably become more and more elliptical and erratic.

There are many gravity simulators out there but this one is pretty accurate: http://www.astrograv.co.uk

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[–] huskylover88 [S] ago 

Interesting. Ill check out the link. Would it still be pretty crazy and chaotic if it were just one planet the size of Earth?