Galaxy BIG BANG THEORY

PREDICTIONS or  POSTULATES

EVIDENCE
A singularity expanded and matter was created Cosmic Background Radiation, 3 Degree K
Approx. 20 min. after the expansion a certain proportion of hydrogen to helium ions were formed; i.e.,  3 parts H : 1 part He  23-25% He in main sequence stars
There would be a given quantity of this mass "missing matter"
Mass was blown outward in an even distribution contradicted by galaxies
The space between galaxies continues to expand.  redshift

Three Misconceptions of the Big Bang Theory
from Paul Sukys, Lifting the Scientific Veil, pp 36-40, Rowman & Littlefield, 1999

#1  The Big Bang was an explosion An "infinitely dense subatomic entity" (singularity) appeared and suddenly inflated.  As "inflation slowed and the universe cooled"  it coalesced into the cosmos we see today.
#2  Scientists think the Big Bang should replace religious explanations of creation A theory is simply a way to explain the evidence.  Big Bang Theory says nothing about religion; it simply presents the conclusions derived from the evidence based on observations and measurements of the universe.
#3  Big Bang is a "guess" The Big Bang Theory has been verified.  It is based on solid experimental evidence.  See first table.   

APPLET EXPERIMENTS

The Hubble Law

Here you will have an opportunity to measure redshifts for several galaxies using a set of common spectral lines here.
Kepler's Third Law
The purpose of the applet is to demonstrate why it takes approximately 2 years for a manned mission to Mars.

Web Links

Terms:

geocentric, heliocentric, Ptolemaic theory, Copernican theory, expanding universe, big bang theory, primeval fireball, gas cloud, nebula, background radiation, black hole, nuclear fusion, star, galaxy, planet, satellite, nebular hypothesis, oscillating universe, expanding universe, red shift, red giant  or red super giant, supernova, pressure expansion versus gravitational contraction

Address questions to Dr. Baker

BACK TO P 100
last updated January 5, 2006