As the earth orbits the sun it only deviates from a straight line by 1/9th of an inch every 18 miles. If it was 1/10th of an inch we would be incinerated. If 1/8th we would freeze to death. Its orbit is perfectly balanced to allow seasons for growing food. If seasons were much longer or shorter we could not grow enough food for life to survive. We sure got lucky on the first try. Not really. It was according to the design of the Grand Designer—God.
Science Digest Jan/Feb 1981 89:124