ISRO Chairman Dr G Madhavan Nair has said that with India's maiden Moon mission making a path-breaking discovery about water presence<br/>on lunar surface, the objectives of Chandrayaan-II would be modified for further probes into that aspect. Talking to reporters in Thiruvananthapuram today he said, this major achievement has been taken very seriously by scientists the world over and there should be more enquiries on the source of water.<br/> Mr. Nair said it has to be found out whether there would be more water towards the pole of the Moon. He said certain changes would have to be made on the mission objectives of Chandrayaan-II for further enquiries in that direction. The ISRO Chairman also said the GSLV in the present cryogenic stage is expected to be launched by this year.