Chennai, Sep 24 (IANS) Indian Space Research Organisation (ISRO) Chairman G. Madhavan Nair has said he can't confirm the presence of water on the moon.

"Mineralogy matter has given 97 percent of the moon surface coverage. I can't confirm the presence of water now. Before the end of this week, we will let you know," Nair told reporters Wednesday at ISRO's satellite launch centre in Sriharikota -- about 70 km from here -- after the launch of India's latest satellite Oceansat-2.

The American space agency NASA is expected to announce Thursday major findings of its moon mineralogy probe that went on board India's Chandrayaan-1.

Though the announcement is still under wraps, it is speculated it will be about the presence of water or ice on the moon.

Nair also said: "Chandrayaan is a 100 percent success as far as ISRO is concerned. ISRO is studying the data sent by the satellite and is now focussing on Chandrayaan-2 which will be launched sometime in 2012 or 2013."