"And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters. And God made the firmament, and divided the waters which were under the firmament from the waters which were above the firmament: and it was so. And God called the firmament Heaven. And the evening and the morning were the second day" (Genesis:1:6-8).
Outer space has a temperature. It has become common to think of space as a vacuum, that has nothing in it, which means it would be at absolute zero temperature. In fact, space is nearly a vacuum, but not quite. And the particles in that near vacuum are in motion, so they have a temperature of 2.73K—the equivalent of 2.73 Celsius degrees above Absolute Zero.
This so-called Cosmic Microwave Background Radiation (or CMB) has been known about since 1965. It is assumed to be an echo of the Big Bang, and is offered in High School textbooks as a proof of the Big Bang. Yet, it is actually problematic for Big Bang cosmologists.
CMB is the same temperature in all directions of space. For this to have occurred, there must have been a transfer of heat energy in the past, by radiation, from hot spot to cold spot, in order to even out temperature differentials. This radiation would travel at the speed of light. Since Big Bang cosmologists assume the universe to be 14.7 billion years old, it follows that this radiation could only travel a maximum of 14.7 billion light years. But the universe is much bigger than that. Therefore, the Big Bang theory cannot explain the regular, even temperature of CMB.
The Bible suggests in Genesis:1:6-8 that there is water at the edge of the universe, which could act as a blackbody, absorbing heat radiation, and neatly accounting for the regularity of the temperature of space. The Bible helps provide an explanation for a phenomenon, which remains a mystery for evolutionary cosmologists.