Universe

What are sun spots?

Nov 30th, 2008 | By

Sun spots are the parts on the solar surface which has temperature nearly 4500 K. this temperature is 1500 K less than the temperature of the surrounding photosphere. So these regions are somewhat cool then the other parts. These sun spots are 150 kilometers away from the earth or we can say 93 million miles
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How far are stars?

Nov 25th, 2008 | By

Have you ever thought that the beautiful twinkling stars in the night are how much far from us? And answer for this is that it is very much away from our planet. The distance of the stars are not measured in meters or kilometers as we measure all the distances in kilometers but we measure
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Why do stars twinkle?

Oct 13th, 2008 | By

Stars appear as twinkling when we look at them from the earth’s surface. Light travels from the stars towards the earth while reaching the earth surface it has to pass from many layers of the atmosphere of different densities and temperature, as we know that temperature decreases by 6.5 degree Celsius, every kilometer we go
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Is the Universe expanding?

Oct 5th, 2008 | By

Do you enjoy knowing more about the mysteries of the universe? A lot of people debate about whether the universe is something that was created by the God Himself, or it is just a creation that happened with the passing of the time. Many people believe and even debate that universe is expanding and some
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How do stars form?

Sep 21st, 2008 | By

Stars are the beautiful objects seen in the sky but what makes them beautiful? What are they made up of? Stars emerge from the dust clouds that are present in all galaxies. The great disturbance and movement deep within the dust cloud causes the knots of a particular mass by which gas and dust particles
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Why there is no life on the moon?

Sep 19th, 2008 | By

Moon is a natural satellite of earth but life on the moon is not possible as on the earth because of many reasons. Firstly there is no water on the moon which is the first and foremost requirement for the life. Life first started on the earth because of water and if no water we
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Why do we se only one side of moon?

Sep 12th, 2008 | By

Moon is the natural satellite of the earth which orbits around the earth in about 29 days. We see only one side of moon this is because of gravitational tides. Earth and moon exert tidal forces on one another. Earth and moon are very close to each other so the earth tidal effects had used
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Why do we have day and night?

Sep 3rd, 2008 | By

Everyday we go through day and night and many times think that why it happens. This is because earth rotates on its own axis. This axis is an imaginary line that passes through the North Pole and South Pole of the earth. The sun is an enormous source of light and it does not move
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What are planets made of?

Aug 29th, 2008 | By

Planets are the bodies that revolve around the sun. These bodies do not give enough light that can easily seen by our eyes but sometimes we see the planet because the light of sun falling on them gets reflected and reaches to us. Our solar system comprises of nine planets which are made up of
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Why do planets circle the sun?

Aug 28th, 2008 | By

The first and foremost reason for why all planets move around the sun is that sun has very strong gravitational force which makes the planets to move around it Just as the moon revolves around the earth because of earth’s gravitational force. So here the question arises that if it is due to gravity then
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