Young Earth Part I
One need not travel too far to find a legion who will exclaim that the earth is old. Very old. Ancient. In fact as a Saganite might be fond of saying, “billions and billions” of years old. Well, in a series of postings I will give the reader some science to ponder. I will be presenting some fodder to fill up the creation cannon. Mock if one must… but hold on to your beanie George. *
Galaxies – They wind themselves up too fast
The stars of our own galaxy, the Milky Way, rotate about the galactic center with different speeds, the inner ones rotating faster than the outer ones. The observed rotation speeds are so fast that if our galaxy were more than a few hundred million years old, it would be a featureless disc of stars instead of its present spiral shape. 
Yet our galaxy is supposed to be at least 1o billion years old. Evolutionists call this “the winding-up dilemma,” which they have know about for fifty years. They have devised many theories to try to explain it, each one failing after a brief period of popularity. The same dilemma also applies to other galaxies. For the last few decades the favored attempt to resolve the puzzle has been a complex theory called “density waves.”
The theory has conceptual problems, has to be arbitrarily and very finely tuned, and has been called into serious question by the Hubble Space Telescope’s discovery of very detailed spiral structure in the central hub of the “Whirlpool” galaxy, M51. 
Supernovas – Too few remnants
Galaxies like our own, according to astronomical observations, experience about one supernova every 25 years. The gas and dust remnants from such explosions, like the Crab Nebula, expand outward rapidly and should remain visible for over a million years.
Yet the nearby parts of our galaxy in which we could observe such gas and dust shells contain only about 200 supernova remnants. That number is consistent with only about 7,000 years worth of supernovas.  Selah.
 Scheffler, H. and Elsasser, H., Physics of the Galaxy and Interstellar Matter, Springer-Verlag (1987) Berlin, pp. 352–353, 401–413.
 D. Zaritsky, H-W. Rix, and M. Rieke, Inner spiral structure of the galaxy M51, Nature 364:313–315 (July 22, 1993).
 Davies, K., Distribution of supernova remnants in the galaxy, Proceedings of the Third International Conference on Creationism, vol. II, Creation Science Fellowship (1994), Pittsburgh, PA, pp. 175–184, order from http://www.icc03.org/proceedings.htm
*The following was taken from “Evidence for a Young Earth” by Dr. Russell Humphreys, PhD Physics