From those figures, scientists calculated a spacefarer's radiation exposure for a quicker six-month voyage in a similarly shielded spacecraft.

NPR: Astronauts Face Radiation Threat On Long Mars Trip

On the tiny chance that some future spacefarer would eventually discover the probes, a team of scientists led by Dr. Carl Sagan created a sort of interstellar time capsule to be carried onboard.

FORBES: Greetings From Earth