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Updated: November 22, 2009 21:13 IST

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In India's quest for the moon, the Chandrayaan-1 will be the first instrumented Indian mission to the moon and also the first ISRO venture to leave Earth's gravity.

The moon, the earth's nearest neighbour has about four billion years of solar system history preserved in it, and over the decades it has evoked intense curiosity and awe.

As we journey toward exploring the unknown facets of this celestial phenomenon, send in all your questions and our Science Editor Pallava Bagla will answer them here.

Your Questions | Answered Questions

laxmikant minz, kharagpur: hello sir, my question is that how this mission will help india or what are the solution one should expect they would get with this mission? how much this mission worth the expenditure invested on this mission?

Dhiraj Kumar Bharati, gurgaon: My quuery is related to launch vehicle capability for the Indian manned mission. If we look at the manned rockets of other countries except for the space shuttle all the rockets used had liquid or cryogenic engines(none had solid motors) since they are much more safer,can be switched on and off etc.Solid motors on the other hand are considered much more risky(ex.the challenger disaster). Now coming to Indias plan for manned mission, I do not see any lauch vehicle in the near future(GSLV mk2 or mk3) without solid motor, so do you consider it safe ? Further ISRO is working on semi cryogenic engine , is it related to manned mission.

Jayant Karn, Panaji Goa: What will be the features of Chandrayaan-II? Will it be manned?

anil vasam, Bangalore: First, Congratulations to all the scientist of india for a succesful launch of Chadrayaan-1. You have mentioned that the satellite will finally be around 100 Km from Moon and stay in that orbit for 2 years. Will this eventually land on moon? If not, how will it plant Indias national flag on the moon? Thank you for answering our questions. Anil

Prashant Kumar, Bangalore: Sir, I want to ask that in how many days Chandrayan -I will reach to its destination ?

Mani, Bangalore: Is there any way we can track day/hourly progress of the satellites journey similar to the one we see for ISS/Shuttle missions in NASA site? Does the escape velocity vary as the vehicle climbs?

solomon surendra, Tripoli, Libya: Give your opinion regarding the controversary on the first moon landing by Americans. As some say it is a hoax, is it true?

soumick samantara, bbsr: sir, do tell me abt the positive outcomes of chandrayan mission of India.could u pls enlighten me abt the concept of time

ARUN NATH, Kolkata: Dear Sir, Please tell me what is the goal of us to send PSLV on moon? Why are we not sending man on moon? Man landed on the moon from USA few decades ago. Why not India sending man?

ashwani tyagi, hyderabad: why isro has taken eliptical method to reach moon.Why it has not taken the straight flight to reach moon

Vighnesh Rudra Das, Bhubaneswar: Chandrayaan-I is a great step towards reclaiming the lost glory of Indian science fraternity.I would like to know whether this mission has any inspiration from our ancient deliberations on the planetary / celestial bodies.

chandramouli Mettapalli, New York: Dear Sir, I enjoy your articles. Can you please let me know which schools and colleges in India are gearing toward Space Exploration Science for NRIs? Thanks Chandramouli Mettapalli

Ramakrishna Ogirala, Hyderabad: Which country is progressing fast in research on Moon?

Gokul Chandola, Gurgaon: What is the date when we can say now we are getting 3d pictures of moon And our mission is successfull. And What is landing date of Satellite prob in moon. I think this date is around two yesr later. Regards, Gokul Chandoal

Srinivasan Ranganathan, San Jose: Please indicate if the He3 is expected to be found in the illimnite ore found on the moon? If so, how are we going to bring it back to earth? Do we have enough quantities of Deuterium required for fusion? Will we be using lithium for generation of further quantities of He3 by bombarding with radiation?

RAJARAJAN, COIMBATORE: WHY INDIA IS UNABLE TO SEND A WHOLE LAUNCH VEHICLE INTO SPACE LIKE U.S. WHY THER IS STAGE SEPARATION AND ALL THAT STUFF??

Karthikeyan A, Chennai: Dear Sir, I am Karthikeyan A, Sofware Engineer, Wipro Technologies. I have a question that our journey will get will give a 3-Dimensional Physical map of moon, and upto how extent this map and this journey will help in exploration of water and helium in moon. Please explain. Thanks in advance sir.

Anup Kumar Banerjee, Bangalore: There are 11 payloads Chandrayan is carrying.I just wanted to know what these payloads are and how will they work?

Sudhesh Nair, Bangalore: First of all Congratulations for successful Launch of CHANDRAYAAN 1 . Sir my question is where this will Place India in Space Technology in the World.

kshetramohansahoo, chennai: How the enlargement of the elliptical orbit around the earth and decreement of orbit around the moon will be carried out ?

r.vijay kiran, tirunelveli: sir,first of all i thank you and your team on making this great effort.In how many fields or in what advantages does the moon mission help the earth.When will ISRO launch its first astronaut into the moons gravity Sir.i am eagerly awaiting for your kind reply.

karan sehgal, delhi: Sir, may i know how this satellite is controlled after leaving the gravity? and wat r ur future plan to knw about moon? and why this satellite take 11 days to reach moon bt in 1969 usa satellite reached only on 4 days ?

arun, Kolkata: Will human being be landed on moon in future?