1. A black body radiates at all wavelengths, but each wavelength’s intensity depends on only the body’s temperature. Perfect blackbodies do not exist, because all matter (solids, liquids, gases, and plasmas) radiates at preferred wavelengths. However, blackbodies can be approximated in the laboratory.
2. Ivars Peterson, “Seeding the Universe,” Science News, Vol. 137, 24 March 1990, p. 184.
3. M. Mitchell Waldrop, “The Large-Scale Structure of the Universe Gets Larger—Maybe,” Science, Vol. 238, 13 November 1987, p. 894.
4. Margaret Geller, as quoted by John Travis, “Cosmic Structures Fill Southern Sky,” Science, Vol. 263, 25 March 1994, p. 1684.
5. Michael A. Straus, “Reading the Blueprints of Creation,” Scientific American, Vol. 290, February 2004, p. 61.
6. Ron Cowen, “Light from the Early Universe,” Science News, Vol. 153, 7 February 1998, p. 92.
7. Stars and other heavenly bodies may not have all been made on a single day (Day 4); instead, they may have been completed on Day 4. Keil and Delitzsch, in analyzing the Hebrew words in Genesis 1, feel strongly that Day 4 marks the completion of the heavenly bodies: “the words can have no other meaning than that their creation was completed on the fourth day.” [See C. F. Keil and F. Delitzsch, Commentary on the Old Testament in Ten Volumes, Vol. 1 (reprint, Grand Rapids: Eerdmans Publishing Co., 1981), p. 59.]
This is consistent with the Bible verses and scientific evidence discussed in "Why Is the Universe Expanding?" on page 449. Before the heavens were stretched out on Day 4, gravity could act much more powerfully, because the universe was so compact. Stars, black holes, and galaxies would form. Galaxies would collide, and stars and galaxies would achieve velocities that, today, baffle most astronomers.