Questions about planetary collision

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    John
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    Yeah, it pretty much a given that the fusion of two planets would kill off most surface life, but the idea is to have a race to develop the escape ship before the situation becomes deadly. Like I said the two are in high speed orbit, so their inertial speed is probably going to slow down the collision some . I’d expect an initial mess or explosion, but then it could just slowly squeeze together over time, causing unusual rock formations and cracks but an overall spherical shape due to the new center of gravity. The days and nights of the new planet may be very short since the orbit speed would be converted into rotation about the axis.

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