This question would not exist!
VGA Planets happened in 1992.
Journey to the Planets happened in 1982.
Nothing.
The planets will get too hot than melt/explode.
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If there was no gravity, the Sun and and the planets would never have formed.
Absolutely nothing
The End.
theyll be doomed
HURR durr hurr
i do not this answer that's why i am asking you this answer.
If the planets did not move in their fixed orbits they may dash each other.