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“Because the gut hormones talk to the immune system, and they talk to the brain, which is mission control for the immune system.”

You’ve probably heard astronauts talking to mission control while they perform operations in space.

The first challenge was to dock safely and successfully at the ISS, which they managed to do within several minutes after Mission Control on the ground helped them restart the craft's thrusters.

To facilitate their voting, the Mission Control Center in Houston sent ballot papers via encrypted email to the ISS.

From there, landlines transmitted the ballots to Mission Control, who then electronically sent them to the astronauts' county clerks for filing.