HYDERABAD, India (AFP) — Spacefaring nations are accelerating their quest to solve the mysteries of the moon, 35 years after the last human landing, and use it as a springboard to explore planets beyond.
Lunar missions dominated the international astronautics congress in Hyderabad, southern India, where 2,500 delegates gathered for five days ending Friday to discuss inter-planetary space travel.
The US wants to revisit the moon by 2020, and Japan, China and India are firming up their own plans to land astronauts on the earth's only natural satellite, after a string of exploratory robotic missions.
"We are just starting and are conservative but we have a very clear roadmap for lunar exploration," Jitendra Goswami, the chief scientist of the Indian moon programme, told AFP here.
India's first robotic mission next year, budgeted at 100 million dollars, will be followed by a second in 2012, Goswami said. The dates for a manned mission will be announced next year.
Japan, which spent 55-billion-yen (478-million-dollar) launching a lunar orbiter in September, plans to carry out two more missions and collaborate internationally to put a man on the moon, space scientist Manabu Kato said.
China's plans include setting up a lunar base after 2020, capping a series of robotic missions beginning at the end of 2007 and a human landing, said Ji Wu, director of China's Centre for Space Science and Applied Research.
The US Apollo programme resulted in the only manned spaceflights to the moon, with six landings from 1969 to 1972.
Yet the moon, at a distance of about 380,000 kilometres from Earth, remains a puzzle to scientists, with questions persisting about its origin, the minerals it contains and whether it has water to support human life.
"There is renewed interest from the scientific community to look at the moon from close quarters and understand it better," said G. Madhavan Nair, chairman of the Indian Space Research Organisation (ISRO).
"They are trying to look for basic signatures of the evolution of planet earth," Nair added. "Secondly, they want to explore the terrain, the minerals available there, in what quantities, and whether they are commercially exploitable."
Mineral samples from the moon contained abundant quantities of helium 3, a variant of the gas used in lasers and refrigerators, which as a possible fuel for fusion reactors may offer a solution to the Earth's energy woes, but it's premature to talk about exploiting them, experts say.
"You can only invest for the future," said B.N. Suresh, director of the Vikram Sarabhai Space Centre in Kerala's capital Thiruvananthapuram. "What's in store 25 years or 50 years later is anybody's guess."
The US wants to return to the moon, via the international space station being built in low-Earth orbit, and use it for missions to Mars and beyond.
NASA administrator Michael Griffin said here that a Mars mission may be possible by 2040.
"If at all we wish to go for exploration of other planets and the solar system, a base in the moon will be of great help," said India's Nair. "We should understand what type of surface and environment exists there and based on that we can have lunar bases in the future."
The data that emerges from the robotic and manned missions "will help us in arriving at such conclusions," he added.
The Hyderabad space congress took place in the 50th year of the space age, ushered in by the Sputnik-1, the first man-made satellite, launched on October 4, 1957 by the then Soviet Union.
That pioneering launch spurred the US Apollo programme and the first human landing on the moon in 1969, which remains "perhaps the greatest technological achievement of the last century," said Bangladesh-born space historian Asif Siddiqi.
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