Referring to the expected touchdown, former ISRO chairman G Madhavan Nair kept his fingers crossed and said it's a very complex manoeuvre and one has to be cautious as all systems have to work in unison for its success. Nair, who headed the space agency when Chandrayaan-1 mission was launched in 2008, said a successful landing would herald a big beginning for ISRO's next phase of planetary exploration.
