09 uni 09

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09 uni 09

  1. 1. MotionMotion is referred to as eitherReal or Apparent.
  2. 2. MotionDoes these pictures showreal motion or apparent motion?
  3. 3. MotionDoes these pictures showreal motion or apparent motion?
  4. 4. MotionDoes these pictures showreal motion or apparent motion?
  5. 5. MotionApparent motion – what we see in the night sky.Does not always represent how the observedobject is actually moving.Real motion – How an object is actually moving.
  6. 6. BrightnessThe magnitude of an objects brightness can bereferred to as eitherAbsolute or Apparent.
  7. 7. Brightness (Temperature)
  8. 8. BrightnessApparent magnitude ranks stars by how brightthey look from Earth.The brightest star (Sol) is -27, and the dimmest staris 36.
  9. 9. BrightnessAbsolute magnitude ranks stars by how brightthey would look if they were all equal distances(33 ly) away from Earth.The brightest star is -13, and the dimmest star is 15 (Temperature)

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