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A green flash can occur at sunrise or sunset when some part of the Sun suddenly and briefly seems to change color from red or orange to green or blue. This is an optical effect caused by the larger refraction of light at the blue/ green end of the spectrum…

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Tides in the Earth and Atmosphere.

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A program being established by NASA will eventually cover and area 10 million times larger than that investigated so far. Using specially designed equipment, it will focus on some 1,000 carefully chosen sun-type stars. The hope is to detect radio signals. The equipment will also scan the entire sky over a wide range of frequencies. Although each point will be observed for only few seconds, the survey will increase the probability that all potential sites for intelligent life have been examined.

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The Russians had witnessed one of nature’s rarest and most mysterious phenomena: ball lightning. Detailed reports date many centuries. Diane de Poitiers, mistress of Henry II of France, is said to have been burned by a ball of lightning that chased her around her bedroom on her wedding night in 1557. One year earlier, eight people in England were reported to have been killed by a “fiery, sulfurous globe” that rolled through a door.

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When we ask about the weather, we usually want to know how hot or how wet it is. Find out more about it.

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Greenhouse gases are trapped and build up in the atmosphere near the earth’s surface. This makes the earth warmer than normal. The warning effect of the trapped greenhouse gases causes changes in the weather patterns on a global scale. Rainfall pattern changes, sea level rises and droughts prevail.

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There are so many natural wonders in this world of ours. It’s certainly difficult to pick just seven. After careful consideration though, these are MY seven at this particular moment, subject to change within the next nanosecond of course.

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Balance in nature is a situation where the interactions between organisms and their environment produce a steady and balanced ecosystem. Various natural cycles help maintain the balance in nature by recycling natural resources to prevent them from being depleted.

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By the time sunlight reaches our eyes, most of the blue light has been scattered out. This leaves only light from the red end of the spectrum which travels towards us with little or no scattering. This is why the Sun appears red during sunsets..In dim light, everything appears to be in shades of black and white because the cone cells in our eyes which are responsible for detecting color do not work well in dim light.

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Our atmosphere only tolerates certain wavelengths of light or photons. Photons are the amount of electromagnetic radiation a wave emits.