Catching faint Martian whispers on Earth

The biggest challenge for any mission to Mars is how do you communicate with an object that is some 200 million kilometres away, as converting those faint whispers into intelligent signals is a Herculean task. India has set up a giant dish antenna 32 meters in diameter exactly for this purpose. NDTV travelled to this giant celestial listening post to understand how the many challenges were overcome.

manishchowhan