China sends rover to 'dark side' of moon | The Daily Star
12:00 AM, December 09, 2018 / LAST MODIFIED: 12:06 AM, December 09, 2018

China sends rover to 'dark side' of moon

China launched a rover early yesterday destined to land on the far side of the moon, a global first that would boost Beijing's ambitions to become a space superpower, state media said.

The Chang'e-4 lunar probe mission -- named after the moon goddess in Chinese mythology -- launched on a Long March 3B rocket from the southwestern Xichang launch centre at 2:23 am (1823 GMT), according to the official Xinhua news agency.

The blast-off marked the start of a long journey to the far side of the moon for the Chang'e-4 mission, expected to land around the New Year to carry out experiments and survey the un-trodden terrain.

"Chang'e-4 is humanity's first probe to land on and explore the far side of the moon," said the mission's chief commander He Rongwei of China Aerospace Science and Technology Corp, the main state-owned space contractor.

Unlike the near side of the moon that is "tidally locked" and always faces the earth, and offers many flat areas to touch down on, the far side is mountainous and rugged.

It was not until 1959 that the Soviet Union captured the first images of the heavily cratered surface, uncloaking some of the mystery of the moon's "dark side".

No lander or rover has ever touched the surface there, positioning China as the first nation to explore the area.

It is no easy technological feat -- China has been preparing for this moment for years.

A major challenge for such a mission is communicating with the robotic lander: as the far side of the moon always points away from earth, there is no direct "line of sight" for signals.

As a solution, China in May blasted the Queqiao ("Magpie Bridge") satellite into the moon's orbit, positioning it so that it can relay data and commands between the lander and earth.

Adding to the difficulties, Chang'e-4 is being sent to the Aitken Basin in the lunar south pole region -- known for its craggy and complex terrain -- state media has said.

The probe is carrying six experiments from China and four from abroad.

They include low-frequency radio astronomical studies -- aiming to take advantage of the lack of interference on the far side -- as well as mineral and radiation tests, Xinhua cited the China National Space Administration as saying.

The experiments also involve planting potato and other seeds, according to Chinese media reports.

Beijing is pouring billions into its military-run space programme, with hopes of having a crewed space station by 2022, and of eventually sending humans to the moon.

The Chang'e 4 mission is a step in that direction, significant for the engineering expertise needed to explore and settle the moon, an expert said.

Chang'e-4 will be the second Chinese probe to land on the moon, following the Yutu ("Jade Rabbit") rover mission in 2013.

Beijing is planning to send another lunar lander, Chang'e-5, next year to collect samples and bring them back to earth.

It is among a slew of ambitious Chinese targets, which include a reusable launcher by 2021, a super-powerful rocket capable of delivering payloads heavier than those NASA and private rocket firm SpaceX can handle, a moon base, a permanently crewed space station, and a Mars rover.

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