New Delhi: Prime Minister Narendra Modi said on Sunday that the two "greatest lessons" he learnt from the Chandrayaan-II mission are "faith and fearlessness" and also announced a quiz competition whose winners will get an opportunity to visit Sriharikota to witness the moment the spacecraft will land on moon in September.

In his monthly 'Mann ki Baat' address, Modi said the way scientists rectified technical issues, which caused ISRO to defer its launch by a few days, is exemplary and unparalleled.