GSCI 1050 Lecture Notes - Lecture 2: Protostar, Protoplanetary Disk, Big Bang
Document Summary
Identify problem, propose hypothesis: collect large amounts of data, test the hypothesis. If it stands the tests, it becomes a theory. Hypothesis: a proposed explanation on the basis of limited evidence as a starting point for further investigation. Essence of a theory: theories are true with our present knowledge: theories must never be shown to be wrong. If it is, the theory is disproven: examples of theories are plate tectonics, and planetary origins. Planetary origins: the big bang theory: all matter and energy packed into a singularity in the beginning. Euclidian space & the theory of relativity: spacetime: space and time are defined to explain phenomena, euclidian space: space and time are independent, general relativity: space-time are linked into a 4th dimension under high energy condition, flexible space-time. Extremely large energy quantities folding of space and time into a singularity state black hole.
