What are the astronomical causes of climate changes, such as the periodic occurrence of ice ages?
According to research by the University of Wichita the Answer is”A1. Earth’s atmosphere is made mostly of nitrogen and oxygen gases. The unusual part of this is the presence of free oxygen in the atmosphere. Free oxygen is very reactive, and should have disappeared long ago. Its presence suggests that some mechanism is continuously creating more oxygen for the atmosphere. Of course, that process is life. Photosynthesis by plants releases oxygen into the atmosphere. A2. As you move upward from the surface of Earth, the temperature cools for several kilometers before it reverse and begins to increase (in the stratosphere). This increase ultimately reverses into another decline in temperature, which in turn changes into an increase in temperature at high altitude. The net effect is that the temperature oscillates back and forth over a fairly narrow range of values. A3. Periodic climate changes are caused by an effect known as the Milankovich cycle. The combined effect of small changes in
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