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AstroGrav Help /Menus /Evolve /Run BackwardVersion 5.2.1)Evolves the frontmost simulation backward one time step after another until it is stopped.
When you select this command, the frontmost simulation will evolve backward one time step after another until you use the Evolve / Stop command to stop it.
While AstroGrav is calculating the next state of the system, the Evolve / Stop command is available for you stop the evolution, and the Evolve / Settings... command is available for you to change the time step.
The time that it takes AstroGrav to evolve the system through one time step is extremely variable, but depends mainly on the following factors.
)that evolves the frontmost simulation forward or backward to a specified date/time, or evolves to the next or previous event of a particular type.
)that sets the evolver settings of the frontmost simulation.
)that stops the evolution of the frontmost simulation.
)that undoes the latest change to the frontmost simulation.
)that redoes the most recently undone change to the frontmost simulation.
)that creates a movie of the frontmost simulation while it is evolving.
)that generates an ephemeris for each selected object in the frontmost simulation, while it is evolving.
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