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Space Wanderers

What happens to satellites that have outlived their usefulness and have been abandoned?
They keep orbiting the earth. If they are not very high — about 400 kilometres or less, they lose velocity in course of time due to friction with dust particles, and gradually spiral towards earth, burning up when they enter the atmosphere, though sometimes pieces may hit the earth.
Those that are thousands of kilometres above the earth never lose velocity and may continue in their orbit for thousands of years.
Once satellites have completed their mission and are about to be abandoned, their electronic transmitters are switched off so that their signals do not disrupt transmissions from other satellites.
The International Telecom Union would like satellites that are low down to be pushed up before they are abandoned, so that they do not fall back to earth. But most space nations fail to do this either because the satellite has exhausted its fuel by that time or they've lost control over it.


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Dimdima is the Sanskrit word for ‘drumbeat’. In olden days, victory in battle was heralded by the beat of drums or any important news to be conveyed to the people used to be accompanied with drumbeats.

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Bharatiya Vidya Bhavan
K. M Munshi Marg,
Chowpatty, Mumbai - 400 007
email : editor@dimdima.com

Dimdima Magazine

Bharatiya Vidya Bhavan
505, Sane Guruji Marg,
Tardeo, Mumbai - 400 034
email : promo@dimdima.com

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Dimdima.com, the Children's Website of Bharatiya Vidya Bhavan launched in 2000 and came out with a Printed version of Dimdima Magazine in 2004. At present the Printed Version have more than 35,000 subscribers from India and Abroad.

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