DISCOVER THE STARS ABOVE!
Learn About The Planets In Our Solar System
For most of history, humans have used visible light to explore the skies. With basic tools and the human eye, we developed sophisticated methods of time keeping and calendars.
Telescopes were invented in the 17th century. Astronomers then mapped the sky in greater detail, still with visible light. They learned about the temperature, constituents, distribution, and the motions of stars.
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.
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It is rewritten not to correct material errors, but to incorporate new discoveries.
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.
The Hubble space telescope has let man see further into the universe then ever before.
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What You Will Discover Inside This eBook:
- Why Study Light?
There are two main techniques for analyzing starlight. One is called spectroscopy and the other photometry. Spectroscopy spreads out the different wavelengths of light into a spectrum for study. Photometry measures the quantity of light in specific wavelengths or by combining all wavelengths.
- Introduction to Color
People already knew that light passed through a prism would show a rainbow or visible spectrum, but Newton’s experiments showed that different colors are bent through different angles.
- Astronomical Instruments
When a man smokes a piece of glass, in order to see an eclipse of the sun, he makes a simple instrument. Ferguson, lying on his back and slipping beads on a string at a certain distance above his eye, measured the relative distances of the stars.
- Our Solar System
From our small world we have gazed upon the cosmic ocean for thousands of years. Ancient astronomers observed points of light that appeared to move among the stars. They called these objects planets, meaning wanderers, and named them after Roman deities.
- The Sun
The released energy prevents the collapse of the Sun and keeps it in gaseous form. The total energy radiated is 383 billion trillion kilowatts, which is equivalent to the energy generated by 100 billion tons of TNT exploding each second.
- Earth's Moon
Unlike Earth, the Moon does not have moving crustal plates or active volcanoes. However, seismometers planted by the Apollo astronauts in the 1970s have recorded small quakes at depths of several hundred kilometers.
- The Planets
As of July 19, 2004, Voyager 1 was about 13,800,000,000 km from the Sun - more than twice the distance from the Sun to icy Pluto.
- Asteroids, Meteoroids And Comets
Where do they come from? They probably come from within our own solar system, rather than interstellar space.
- Beyond Our Solar System
The right size, the right distance, the right temperature: we finally have evidence for the existence of extrasolar worlds that may be candidates for life-bearing planets as well.
- Constellations
A constellation is a group of stars visible within a particular region of the night sky. The word constellation also refers to the region in which a specific group of stars appears.
- Finding The Stars In The Sky
If you don't have a telescope, here is a simple and inexpensive way to locate the stars.
DISCOVER THE STARS ABOVE!
Learn About The Planets
In Our Solar System
Your Stargazing Hobby Starts Right Here!
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