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Lunar Eclipse The cycle of waxing and waning begins with a New Moon and ends with a Crescent Moon which changes into a New Moon once again. It is in the process of waxing and waning that, on occasions, the Earth gets perfectly aligned between the Sun and the Moon so as to cast a shadow on the Moon, this causes what we call a Lunar eclipse. Eclipses don’t happen frequently...
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September 26, 2017 evirtualguru_ajaygourParagraph WritingNo Comment
Waxing and Waning Of the Moon If we watch the Moon for a month, we would see that it keeps changing it’s shape, sometimes it is a full circle and then on occasions it is just a semi-circle, The changing of in the Moon’s shape is called waxing and waning, The light, that we get from the Moon at night is not it’s own, it is in fact, acting only...
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September 26, 2017 evirtualguru_ajaygourParagraph WritingNo Comment
The Moon The Moon is our nearest neighbour in space and a natural satellite. It was believed earlier that the Moon was a piece of the Earth which broke away billions of years ago. Today the astronomers believe that both the Earth and Moon were formed from the same cloud of dust close to 5 billion years ago. The Moon is located 3,84,400 kms away from us, it has a diameter...
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September 26, 2017 evirtualguru_ajaygourParagraph Writing4 Comments
The Exploration of Mars Whatever was known about Mars till 1964 was based on the research work carried out by astronomers and scientists. In 1965 the Mariner-IV, an unmanned spacecraft, took the first pictures of Mars. Subsequent to this the Mariner-IX took close-up pictures of this desolate planet in 1971. Based on the data available from the pictures taken by these two space probes, the Viking-I and Viking-II unmanned spacecraft...
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September 26, 2017 evirtualguru_ajaygourParagraph WritingNo Comment
Why Are Stars Seen Only At Night? The atmosphere which surrounds the earth gives us the blue sky as we see in the daytime. Stars don’t disappear during daytime, it is just that they cannot be seen because of the Earth’s blue sky and the light from the Sun. If we were to stand on the Moon we would see the stars clearly since lack of air gives the sky a...
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September 26, 2017 evirtualguru_ajaygourParagraph WritingNo Comment
The Creation of Stars As we look up in the night sky we see close to 3000 different stars. They seem small but that is because of the distance, in reality they are as big as our Sun, some even bigger. Stars are generally born in clusters and are formed from thin clouds of hydrogen gas. As these clouds shrink, the hydrogen they contain gets compressed which increases the temperature and...
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September 26, 2017 evirtualguru_ajaygourParagraph WritingNo Comment
Comets Comets are visible at night and they look very much like meteors and meteorites but in reality they are different. When we see a comet in the sky we notice that it has a bright head and a glowing tail following it as it shoots across the sky. On a closer examination through a telescope we see a bright head, called the ‘coma’ and a large cloud of glowing dust...
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September 26, 2017 evirtualguru_ajaygourParagraph WritingNo Comment
Meteors and Meteorites A meteor is what we commonly known as a shooting star. Millions of small pieces of rock, some only as large as a marble, are orbiting the sun. On occasions, one of these pieces enters the Earth’s atmosphere. The friction it experiences while passing through the Earth’s atmosphere, at a speed of over 50 kilometres per second, causes it to burn up leaving a trail of white light...
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September 26, 2017 evirtualguru_ajaygourParagraph WritingNo Comment
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