An observer on Earth sees Planet X to be stationary and also sees a rocket travel from Earth toward Planet X at 0.5c. The rocket emits a pulse of light that travels outward in all directions. According to an observer on Planet X, how fast is the light pulse traveling toward them? Select one: a. 0.80c b. 0.50c c. 1.0c d. 1.5c e. 0.60c

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