Chronic disease is disease that persists over a long period of time. Chronic disease can hinder independence and the health of people with disabilities, as it may create additional activity limitations.hronic disease is disease that persists over a long period of time. Chronic disease can hinder independence and the health of people with disabilities, as it may create additional activity limitations.
Since the moon's orbit is elliptical (oval-shaped), its distance varies from about 221,463 miles (356,334 kilometers) at perigee (closest approach to Earth) to 251,968 miles (405,503 kilometers) at apogee (farthest point). The average distance from the moon to the Earth is 238,857 miles (384,392 kilometers).
The Moon's average distance from Earth is about 240,000 miles, ranging from 225,000 miles at closest approach to a maximum separation of 251,000 miles over the course of its orbit. For some scale, that's 0.003 times the average distance from the earth to the sun. http://en.wikipedia.org/wiki/Moon.