Lecture 2 - PlanetEarth 25/01/200809:19:00 BuildingaPlanet...

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Planet Earth 25/01/2008 09:19:00 Building a Planet Universe o Doppler Effect – Wavelengths are higher when faster together and  lower when spread out.  Train example, higher pitch coming at you,  lower going away.                       Wavelength o o Red Shift – Similar to Doppler effect except in terms of light and not  sound.  Moving towards you it’ll be Blue, receding is Red.  Same  concept of bunching up light waves or spreading them out.   o Big Bang: Evidence that all things seem to depict Red Shift shows that  everything is flying out, as if there was a Big Bang to send it all out.  All  matter was concentrated at this point and then all matter and energy  was released. Nebular Hypothesis o Solar system happened as a result of a single event o Planets all being in one plane is evidence of this. o
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Lecture 2 - PlanetEarth 25/01/200809:19:00 BuildingaPlanet...

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