observe the heaven

On every clear night, we can see the stars twinkling in the dark sky, sparkling like jewels on black velvet. Our early ancestors used to do the same, gazing in awe and wonder at what they saw. People began stargazing seriously when the first civilization grew up in the Middle East thousands of years ago. They used their observations to work out a calendar, which is a means of dividing up the year into convenient periods. They also looked in the heavens for signs that might mean good luck or bad to their people.
These early stargazers not only looked at the starry heavens, but also tried to explain what they saw there. They notice how the stars seemed to move across the heavens during the night, rising in the east and setting in the west.
They thought that the stars must therefore be attached to the inside of a huge globe, or sphere, which revolved around the Earth from east to west. We know now, of course, that there is no celestial(heavenly) sphere. The apparent movement of the stars is caused by Earth spinning on its axis once a day.
The night sky looks beautiful even with naked eye, but looks magnificent through binoculars or a telescope. The more powerful the telescope, the more stars you can see-millions upon millions of them, as well as other delights, such as this beautiful nebula.

Technorati Tags: Science/Space star night

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