A little over 50 years after Apollo 17 astronauts set foot on the moon, multiple countries and companies are joining an ever-intensifying race to stake claims to the lunar surface. At least three countries — the US, China, and Russia — have announced plans to put humans there by the end of this decade. India is also gearing up to launch its Chandrayaan 3 mission comprising three modules, propulsion, lander and rover, in the second week of July this year — a stepping stone in its quest of sending humans there.