Astronomy Revision Questions 5.0 / 5 based on 1 ratingTeacher recommended ? PhysicsAstrophysicsA2/A-levelAQA Created by: Lizzy DayCreated on: 26-06-16 13:35 341 Across 1. What is the equation for red shift? (1, 2) 4. What is Hubble's law? (1, 2) Down 1. How can you calculate red-shift from frequency? (1, 2) 3. What is the equation for the energy of a photon? (1, 2, 2)
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