Now, we tend to think of frequencies when we talk about sound waves. In scientific terms light, energy and sound are just a few forms of the same thing, frequencies of energy that are emulating from a source. Now we get to why radio astronomy is so necessary. The range of frequency that light occupies in the big spectrum of frequencies is really pretty small. Not only knowing the weather will make sure your star gazing is rewarding but if you learn when the big meteor showers and other big astronomy events will happen will make the excitement of astronomy come alive for you. And when all is said and done, get equipped. Your quest for newer and better telescopes will be a lifelong one. - Lunatic which has the root word "Luna" in it which is the Latin word for moon. This highlights the long held belief that is even prevalent today that irrational behavior and even wild and dangerous things happen during a full moon. Astronomy and its interrelationship with astrology has also influenced culture, education and religion to a very large extent over the centuries. The very fact that almost certainly, virtually every dot up there in the sky is another star or celestial body that is vastly larger that Earth itself, not by twice or ten times but by factors of hundreds and thousands, can be a mind blowing idea to kids. Children have enough trouble imagining the size of earth itself, much less something on such a grand scope as outer space. But of the many celestial phenomenons, there is probably none as exciting as that time you see your first asteroid on the move in the heavens. To call asteroids the rock stars of astronomy is simultaneously a bad joke but an accurate depiction of how astronomy fans view them. Unlike suns, planets and moons, asteroids are on the move, ever changing and, if they appear in the night sky, exciting and dynamic. The reflector s strength is in seeing more distant objects and the lens is concave or bends in. It uses mirrors to focus the image that you eventually see. The final type, the Schmidt Cassegrain telescope is the most complex and accomplishes the goals of both but it uses an involved system of mirrors to capture the image you want to see.