What is GAGAN?

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GAGAN stands for GPS aided geo-augmented navigation. It is a technology which the Airport Authority of India would use with the help of ISRO for the navigation of the planes. The technology will be assisted by GSAT10 which is launched on September 29, 2012.
For further details Check HERE (A Wikipedia Article).

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GSAT10 from Kourou

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GSAT10 has been launched on September 29, 2012 from Kourou at French Guiana in South America.
Check here the Hindu Report which is note of a kind.
Next Question:
What is GAGAN?

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ISRO Vision For Next Two Years.

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For General Studies Paper two, small essay (250 words question) on space policy of India is an important topic.

The topic for consideration is an article by Pallava Bagalla, a co-author of Destination Moon: India’s quest for moon, mars and beyond, that as appeared in Economic Times and hitched below in Sources to be used.

The article is simple touching numerous points. An aspirant can make points on area of application of Space technology and Indian Space Policy, the future plans, the cost factor and position of India. The article does not need specialized understanding of the topic. Highly recommended for the selection for October 2010.

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Link Hitched:
India in Space: Economic Times

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Destination Moon
Indian Space Research Organization (Isro) Programs and Exploration Handbook

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Objectives of GSLV-D3 Mission:

Objectives of GSLV-D3 Mission:

As the The Hindu Report, there are three main objectives of GSLV - D3 Mission which is reproduced below.

The GSLV-D3 mission had three objectives: to develop and launch an indigenous cryogenic stage with the engine and associated systems; to evaluate the performance of the indigenous cryogenic stage and engine; and to put the communication satellite GSAT-4 into orbit.

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Source: The Hindu

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Chandrayaan-1 Kaguya Chang'e 1 and Sara

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Kindly use the following report to develop notes on the following terms:
Chandrayaan -1 (Already included in the list)
Kaguya
Chang'e 1
Sara- an Acronym for 'Sub Kev Atom Reflecting Analyser'.
Lunar Reconnaissance Orbiter

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Report to be used:

Chandrayaan-1 is sole moon craft in space - India - The Times of India

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ISRO's Mars Mission 2015 and Objectives of Chandrayana I

In the following report, there is a note on the Mission Mars 2015 of ISRO, a summary of present missions to the Mars and the Objectives of the Chandrayana I. It is a good report for making notes on above mentioned issues. USE IT.

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Source to be Used:
Khabrein.info

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What is a Exoplanet?

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The following links as news report can be useful in making a note on this question.
The astronauts have recently been able photograph a star called Fomalhaut which is nearly 25 light years away having planets. The exoplanets or extrasolar planets are issue of interest because they may become the case of discovery of extra territerial life as the planets orbiting the other stars may also have life as it is here on the earth. It may be cause of proving theory of existence of aliens. (Fascinating!!!. I have doubt about including in the notes because it is highly based on theories. The only factor played in the favour of imaging of the distant plant in other star system by Hubble telescope after technological advancement in imaging.)

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BBC NEWS Science & Environment Exoplanets finally come into view

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http://www.efluxmedia.com/news_Researchers_Capture_First_Photo_Of_An_Exoplanet_Orbiting_A_Star_29045.html

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http://www.theregister.co.uk/2008/11/14/fomalhaut_b/

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Wikipeida Article on Extra Solar Planets with definition of Planet:http://en.wikipedia.org/wiki/Exoplanets

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What is Bhuvan?

Bhuvan, ISRO's new eye in the sky-Ahmedabad-Cities-The Times of India

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Bhuvan will be a portal of ISRO which will show the earth images upto 10 m. It is similar to Google Earth and Wikimapia.

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The Times of India Report is a complete note in itself. It is valid upto March 2009. After that, the portal will be launched and then more information can be added.

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High Probable Rate: Both Prelims 2009 and Mains 2009.

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BBC NEWS | India launches first Moon mission

BBC NEWS Science & Environment India launches first Moon mission

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Rediff News Report: Brief, includes basic dimensions of the vehicle PSLV

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The New York Times Report: (Just a side talk. It is interesting to compare the contents of New York times and BBC. No doubt, NASA gadgets are also being carried aboard PSLV, but China remains paramount on the minds of the reporters in America. I will here rate BBC report higher over and above New York Times. )

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Chandrayaan-I passes thermal vacuum test-India-The Times of India

Chandrayaan-I passes thermal vacuum test-India-The Times of India

Chandrayaan I satellite is the first Indian mission to moon.

According to TOI report, " The ambitious moon mission is slated for second half of October. An ISRO official said on condition of anonymity that the first available date is October 22, and the launch window has been fixed between October 22 and 26. "

Further, " The nearly 1,400 kg Chandrayaan-I satellite would be launched by the 316-tonne Polar Satellite Launch Vehicle (PSLV-XL) from Satish Dhawan Space Centre at the spaceport of Sriharikota.

There are six scientific payloads from NASA, ESA and Bulgaria in addition to the five Indian instruments onboard Chandrayaan-I."

The final announcement will be made by:
G Madhavan Nair, the Chairman of ISRO.