All sciences are making an advance, but Astronomy is moving at high speed. Since the principles of this science were settled by Copernicus,four hundred years ago, it has never had to beat a retreat. It is rewritten not to correct material errors, but to incorporate new discoveries.

At one time, Astronomy studied mostly tides, seasons, and telescopic aspects of the planets; now these are only primary matters. Once it considered stars as mere fixed points of light; now it studies them as suns, determines their age, size, color, movements, chemical constitution, and the revolution of their planets. Once it considered space as empty; now it knows that every cubic inch of it quivers with
greater intensity of force than that which is visible in Niagara. Every inch of surface that can be conceived of between suns is more wavetossed than the ocean in a storm.

The invention of the telescope constituted one era in Astronomy; its perfection in our day, another; and the discoveries of the spectroscope a thirdno less important than either of the others. New discoveries are made every day with the advancement of telescopes. The Hubble space telescope has let man see further into the universe then ever before. Astronomy and space science is an ever changing study, and
possibly the most exciting of the sciences. It is for one reason that this book was written, to hopefully interest more people in the exciting study of the universe around us.

CHAPTER PAGE :

https://www.tradebit.com Study Light? 4
https://www.tradebit.comroduction To Light 5
https://www.tradebit.comroduction To Color 10
https://www.tradebit.comronomical Instruments 14
https://www.tradebit.comr Solar System 18
https://www.tradebit.com Sun 20
https://www.tradebit.comth's Moon 22
https://www.tradebit.comnets 27
https://www.tradebit.comeroids 66
https://www.tradebit.comeoroids 68
https://www.tradebit.comets 70
https://www.tradebit.comper Belt 72
https://www.tradebit.comond Our Solar System 74
https://www.tradebit.comrs 76
https://www.tradebit.comstellations 94
https://www.tradebit.comd The Stars In The Sky 102

How would you like to get started today in the fascinating hobby of astronomy?