A Chinese lunar rover landed on the far side of the moon on Thursday, in a global first that boosts Beijing's ambitions to become a space superpower.
The Chang'e-4 probe touched down and sent a photo of the so-called "dark side" of the moon to the Queqiao satellite, which will relay communications to controllers on Earth, China's national space agency said on its website.
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 lunar probe mission -- named after the moon goddess in Chinese mythology -- launched in December from the southwestern Xichang launch centre.
It is the second Chinese probe to land on the moon, following the Yutu (Jade Rabbit) rover mission in 2013.
Unlike the near side of the moon that offers many flat areas to touch down on, the far side is mountainous and rugged.
The moon is "tidally locked" to Earth in its rotation so the same side is always facing Earth.
Chang'e-4 is carrying six experiments from China and four from abroad, including low-frequency radio astronomical studies -- aiming to take advantage of the lack of interference on the moons' far side.
The rover will also conduct mineral and radiation tests, the China National Space Administration has said.
"It's a very good start," said Wu Weiren, chief designer of China's lunar exploration program, in an interview with state broadcaster CCTV. "We are now building China into an aerospace power."
- Space dominance -
Beijing is planning to send another lunar lander, Chang'e-5, later this 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.
The People's Liberation Army "looks at space as a new strategic high ground," said Michael Raska, who studies security and defence issues at the S. Rajaratnam School of International Studies in Singapore.
An increased presence in space will be vital for "anything for early warning, surveillance, reconnaissance, targeting... nearly every military mission out there is relying on some sort of space capability."
But China's aerospace industry still has a long way to go, especially compared to that of the US, said Shen Dingli, a Shanghai-based international studies scholar.
"Armstrong landed on the moon more than 50 years ago -- Chinese people still have not landed on the moon even today."
- Extreme challenges -
It was not until 1959 that the Soviet Union captured the first images of the moon's mysterious and heavily cratered "dark side".
No lander or rover has ever previously touched the surface there, and it is no easy technological feat -- China has been preparing for this moment for years.
A major challenge for the mission was communicating with the robotic lander as there is no direct "line of sight" for signals to the far side of the moon.
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.
In another extreme hurdle, during the lunar night -- which lasts 14 Earth days -- temperatures drop to as low as minus 173 degrees Celsius (minus 279 Fahrenheit).
During the lunar day, also lasting 14 Earth days, temperatures soar as high as 127 C (261 F).
Adding to the difficulties, Chang'e-4 was sent to the Aitken Basin in the lunar south pole region -- known for its craggy and complex terrain.
China's previous moon rover Yutu also conquered those challenges, and, after initial setbacks, ultimately surveyed the moon's surface for 31 months.
Its success provided a major boost to China's space programme.
China National Space Administration
The Chinese Space Program - News, Policy and Technology
China News from SinoDaily.com
China launches telecommunication technology test satellite
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Xichang (XNA) Dec 31, 2018
China successfully launched the No. 3 telecommunication technology test satellite on Tuesday.
The satellite was launched at 0:53 a.m. Beijing Time by a Long March-3C carrier rocket from the Xichang Satellite Launch Center in southwest China's Sichuan Province.
The satellite was developed and produced by the China Aerospace Science and Technology Corporation.
There have been 296 Long March rocket missions.
span class="BDL">Source: Xinhua News /span>
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