The speed of light constant in space is less than the speed of light in a vacuum due to dust and gas in space. The speed of light is slowing down in space, and this gives a far different time of creation. Light travels faster in space than in air, gas, water, glass, diamonds or rubies. The undeniable fact about the speed of light is that it is not constant. Scientists have measured the speed of light in space at 186,282 miles per second (a partial vacuum, we will discover) and in the earth's atmosphere a little less, in water at 140,000 miles per second, the speed of light in glass at about 125,000 miles per second, in diamonds at 77,600 miles per second, and in rubies at only 190 feet per second. They know that the speed of light is slower in air than it is in a partial vacuum; that it is slower in water than in air, and slower in glass than in water. All their other conclusions about red shift, Big Bang and the speed of light are based on space being a perfect vacuum and light having a constant speed of 186,282 miles per second in space, or 299,792,458 meters per second.
The Speed of Light is Not Constant
In 1982, Dr. Barry Setterfield, an Australian astronomer, made an amazing discovery that he first presented at the 1983 National Creation Conference.1 Dr. Setterfield tabulated all the measurements of the speed of light since 1675. The computer-generated curve showed that the speed of light was slowing at an exponential rate. Extrapolating back to 4082 BC, the approximate time of creation of the earth, the speed of light was 107 – 1011 times its present velocity. Immediately, the scientific community set out to discredit Dr. Setterfield's report, only to verify that he was indeed correct to an extremely high statistical probability. No one could explain this exponential decay.
Ten years later in 1992, I realized that the Hubble space telescope and others show space filling with gas and dust. Many enormous clouds of dust and gas in space are so dense that they completely obscure the light from any stars behind them. Hubble's Bubble is a good example. This enormous cloud of gas six light-years across is in the constellation Cassiopeia. Dust and gas decrease the speed of light. This would explain Setterfield's discovery that the speed of light was much greater at the time of creation of the earth. Light waves are the result of vibrations of electrons in matter. In my opinion, light waves are propagated instantaneously in an absolute vacuum. When a light wave strikes some matter, the infinitesimal inertia of the electrons requires an infinitesimal amount of time for the electrons in the matter to vibrate at the frequency of the light wave. This results in a delay in light passing through any medium. If this is true, light from the stars would be seen on the earth the instant the stars were created because space had no gas or dust at the time of creation.