Mangalyaan is world's cheapest inter-planetary mission

India is dreaming big by attempting to head to the Red Planet. Scientists at the Indian Space Research Organisation (ISRO) have been on the roll ever since India's maiden mission to moon, Chandrayaan-1, brought back clinching evidence of the presence of water on the moon. While speaking to NDTV's Science Editor Pallava Bagla, former director of the ISRO satellite Center Dr TK Alex described the water finding as the "biggest discovery of the century". Alex says Indians should feel proud of Mangalyaan since it is "undoubtedly world's cheapest inter-planetary mission ever". (For more on India's Mars Mission, click here.)