Sentence:  As the moon <WSD>wheels</WSD> around Earth every 28 days and shows us a progressively greater and then stingier slice of its sun-lightened face, the distance between the moon and Earth changes, too. At the nearest point along its egg-shaped orbit, its perigee, the moon may be 26,000 miles closer to us than it is at its far point. 
Meaning of the word marked with <WSD> tags:  To travel around in large circles, particularly in the air.