Science, Creation & Evolutiontuppence, Hemi here.Sometimes. But we don't need to. We can just observe the evidence to know what happens. People test the half-life of Argon to see how long it takes for half of it to decay, but we don't have to do test 30 half-lifes. "This is why the scientific method is about observation, not just experimentation. Many sciences, like forensics, geology, astronomy, meteorology, etc. do very well without experimentation, by observing evidence. " Not everything is correct in any human undertaking. However, this process works better than almost anything else humans do. It has been remarkably successful at understanding our universe, and providing knowlege for useful new technology. Red shifting is normally due to the Doppler effect. A galaxy moving away from our own, will show the standard spectral lines, but shifted to the red side of the spectrum, just as an approaching one will show them shifted to the blue side. Since Einstein, we have realized that it is theoretically possible, in a very high gravitational field, to cause "red shifting" apart from movement. That effect has since been confirmed; astronomers have actually found some examples. This is how science works. Theories are modified or removed as facts warrant. However, the Andromeda Galaxy is still moving toward our own, and the red shift confirms this. |
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