A Spaceship Is Observed from the Earth to Be Moving

question 2

Multiple Choice

A spaceship is observed from the Earth to be moving toward a star at a speed of 0.80 c. If the distance from the spaceship to the star is 1.6 ly as measured from Earth, how far is the star as measured from the moving spaceship?

• A) 2.7 ly
• B) 1.9 ly
• C) 1.6 ly
• D) 1.2 ly
• E) 0.96 ly

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