From Here To Kolob
Blue Oyster Cult: Astronomy
Eons ago, when the moon s orbit was closer to the Earth, it was the effect of the moon that caused massive changes in the topography of the land and on continental drift as well. You may sometimes wonder where the moon came from. Was it a planet that traveled too close to Earth and was captured in our orbit?
For example, our planet has not cleared away the moon but it has captured it into its own orbit so we classify as a planet. That s a relief huh? There are many objects floating around in our solar system other than the planets we know of. It s an interesting piece of trivia that in addition to the planets there are 165 moons orbiting around those nine planets.
The three primary types of telescopes that the amateur astronomer might buy are the Refractor, the Reflector and the Schmidt Cassegrain telescope. The first two are named for the kind of lens that is used. It is pretty easy to see that the lens is the heart of the telescope so the kind that you will use will determine the success of your use of that telescope.
So it might be that once a year vacation to a camping spot or a trip to a relative s house out in the country that we find ourselves outside when the spender of the night sky suddenly decides to put on it s spectacular show. If you have had that kind of moment when you were literally struck breathless by the spender the night sky can show to us, you can probably remember that exact moment when you could say little else but wow at what you saw.
And yes, SETI, or the Search for Extra Terrestrial Intelligence is a part of radio astronomy, albeit a tiny part. But of much greater importance is how radio astronomy has empowered serious astronomers (that is those who get paid to do it) to study stars many light years away, to study black holes which we could never see with our telescopes and to gather research and data about the whole of the universe that otherwise would be impossible to know and understand.
A meteoroid is actually a small piece of space rubble, usually dust or small rocks that come from either a comet or the break up of an asteroid in space and that eventually plummets toward the earth. There are some interesting details about the life of a meteoroid that make the viewing of shooting stars even more fun.