Indian Prime Minister Narendra Modi addresses his Bharatiya Janata Party's rally in New Delhi, India, on Dec. 22, 2019. Photo:Xinhua

India plans to make a fresh attempt to land an unmanned mission on the moon in 2020 after a failed bid last year, the head of the country's space program said Wednesday.

Work is going "smoothly" on the Chandrayaan-3 mission to put a rover probe on the moon's surface, Indian Space Research Organisation chairman K. Sivan told a press conference.

"We are targeting the launch for this year but it may spillover to next year," Sivan said. Indian sources said authorities had set November as a provisional target for launch.

India seeks to become only the fourth nation after Russia, the US and China to put a mission on the moon's surface and boost its credentials as a low-cost space power.

The country's Chandrayaan-2 module crash-landed on the moon's surface in September.

Sivan said the new propulsion module, lander and surface rover would cost about $35 million, with a significantly higher outlay for the launch itself. 

He added that India had chosen four candidate astronauts to take part in the country's first manned mission into orbit, pledged to take place by mid-2022.

The four are to start training in ­Russia later this month. 

Up to three astronauts are to take part in the mission, which will be one of the landmark projects scheduled for the 75th anniversary of India's independence from British rule.