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In order to cross the galaxy quickly, a spaceship leaves Earth traveling at 0.9999991 c. After...

In order to cross the galaxy quickly, a spaceship leaves Earth traveling at 0.9999991 c. After 16 minutes a radio message is sent from Earth to the spacecraft.

1.) How much time elapses, in seconds, on Earth clocks between when the message is sent and when it is received?

2.) If the spaceship replies instantly with another radio message, what total time, in seconds, elapses on Earth clocks between when the message is sent and when the reply is received?

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