ISRO must focus on developing powerful booster rockets which could carry as much as five tons space orbiter which could go around the moon. One does not know how powerful is the best in the ISRO stable. I presume the GSLV is the most powerful one but that is so, I do not think it would be sufficient for the moon exploration project. Liquid propulsion in powerful booster rockets is an important focus for ISRO and I fervently hope they manage to develop one soon. S Rajendran
