MARS 1010 Lecture 1

MARS 1010 Lecture 1 - MARS 1010 Lecture 1 11:23:00 AM The...

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MARS 1010 Lecture 1 20/08/2007 10:23:00 The earth:  Solid surface, atmosphere, water in three phases, a biosphere  Big Bang:  If the universe is finite then it should be collapsing inward under the forces  of gravity.  The big bang provides the outward force to overcome the gravitational forces  working to pull everything back together. Scientific Method: Observations, Paradox, Hypothesis, Collect data, Alles Klar?, Fine  tuning and modifications, continue to observe and keep track of assumptions.  There is  no scientific proof, just support for a hypothesis.   Red shift:  Stars moving away from earth produce a shift in the absorbed light  frequencies towards the red side of the spectrum as opposed to blue.  This processs  doesn’t indicate a compositional shift but a Doppler like effect on the light moving away  from us.  Interestingly enough, the further a star is away from our solar system, the 
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