Archive for August, 2019

16/08/2019

China-Arab States tourism fair to be held in NW China

YINCHUAN, Aug. 15 (Xinhua) — The China-Arab States Tour Operators Conference 2019 will be held from Sept. 4 to 7 in Yinchuan, capital of northwest China’s Ningxia Hui Autonomous Region, local authorities said Thursday.

According to the region’s department of culture and tourism, the four-day event will include a series of activities such as tourism resources promotion, tourism cooperation and exchange between China and Arab countries, and investment project negotiation.

Tourism officials from Indonesia, Morocco and Chad, as well as some 120 traders from China and 15 countries along the Belt and Road including Singapore, the Republic of Korea and Egypt, will participate.

Tourism resources and products such as the starry sky, the Great Wall, intangible cultural heritage and wine in Ningxia will be presented in the form of a stage drama at the fair.

Foreign participants will also introduce their tourism resources to further integrate Ningxia into regional tourism along the Belt and Road.

Traditional handicrafts such as papercutting, embroidery, wood carving and clay sculptures will be displayed to propel the development of the cultural tourism industry in the region, according to Zhao Mingxia, deputy director of the culture and tourism department.

Source: Xinhua

16/08/2019

Foreign ministers of China, Japan, South Korea to hold talks amid trade, history tensions

SEOUL (Reuters) – Top diplomats of South Korea and Japan plan to meet their Chinese counterpart in Beijing next week amid a flare-up in tension over trade and history, Seoul’s foreign ministry said on Friday.

Foreign ministers Kang Kyung-wha of South Korea, Taro Kono of Japan and Wang Yi of China will meet from Tuesday to Thursday, the ministry said. The last such gathering was three years ago.

Kang and Kono are also expected to meet separately on the sidelines of the event, for the first time since South Korean President Moon Jae-in on Thursday urged dialogue to mend ties. The ministry said the two-way talks had not yet been finalised.

Ties between the neighbors are arguably at their lowest ebb since their relationship was normalized in 1965, hit by a heated feud over the issue South Korean forced labor during World War Two which spilled over into a bitter tit-for-tat trade row.

In a speech marking Korea’s independence from Japan’s 1910-45 rule, Moon toned down his recent stringent rhetoric regarding Japan, saying Seoul would “gladly join hands” if Tokyo chose dialogue and cooperation.

At the meeting, the ministers are also expected to prepare for a summit planned later this year.

From 2008, the three countries had agreed to hold a summit every year to foster regional cooperation. But bilateral tension, including that between China and Japan, has often intervened.

“We expect the meeting will help reinforce the institutionalization and substantiate the foundation of the three-way cooperative scheme,” the ministry said in a statement.

Relations between South Korea and Japan worsened sharply after the South’s Supreme Court last year ordered Japanese companies to compensate some wartime forced laborers. Tokyo says the matter was settled by the 1965 treaty normalizing ties.

The talks come at a sensitive time ahead of the Aug. 28 date when Japan’s decision to end South Korea’s fast-track trade status takes effect, a move that prompted South Korea to follow suit.

As a countermeasure, Seoul has also warned it could consider scrapping an intelligence-sharing pact usually automatically renewed on Aug. 24 every year.

The accord, the General Security of Military Information Agreement (GSOMIA), eases three-way intelligence gathering with Washington which is pivotal in dealing with North Korea’s nuclear and missile threats.

In a separate statement, the South Korean foreign ministry expressed concern over Kono’s reported remarks that Moon should “exert his leadership” to resolve the dispute, saying they were unhelpful for stable management of two-way ties.

Source: Reuters
16/08/2019

China’s Ninebot unveils scooters that drive themselves to charging stations

BEIJING/HONG KONG (Reuters) – Segway-Ninebot Group, a Beijing-based electric scooter maker, on Friday unveiled a scooter that can return itself to charging stations without a driver, a potential boon for the burgeoning scooter-sharing industry.

Ninebot said Uber and Lyft, the ride-hailing giants that are expanding into scooter-sharing, would be among the customers for the new semi-autonomous vehicles that are expected to hit roads early next year.

Gao Lufeng, Ninebot chairman and chief executive, told Reuters in an interview that AI-driven scooters, controlled remotely from the cloud, could radically improve the economics of scooter-sharing.

“The pain point for scooter operators is to better maintain the scooters at a lower cost,” he said. Currently, operators of scooter sharing fleets have to collect the machines manually for re-charging.

Formed by the 2015 combination of China’s Ninebot and U.S. transportation pioneer Segway, the company has quietly become the largest supplier for scooter-sharing companies such as Bird and Lime.

“I believe scooters will replace bicycles as the prime solution for micro-mobility,” Gao said. “It’s human nature to save energy when commuting.”

The scooter-sharing fad was triggered two years ago with the launch of Bird in California. Venture-capital investors have since poured hundreds of millions of dollars into the sector, and fleets of electric-powered scooters now operate in cities across the U.S. and Europe.

Segway-Ninebot Group has applied to list its shares on the China’s new Nasdaq-style board for homegrown tech firms, the STAR Market. The company sold 1.6 million scooters in 2018, according to a prospectus filed in April.

Lyft and Uber did not immediately respond to emailed requests for comment.

The new scooters will be priced at close to 10,000 yuan ($1,420), more than the company’s traditional scooters, which it sells to scooter companies for $100-$300.

The new machines will start road testing next month and will be largely commercialized in the first quarter of 2020.

The company also launched two self-driving delivery robots — one for outdoor delivery, the other for indoor services.

Ninebot said the unmanned delivery robots will initially serve the food delivery industry in China.

The company is in talks with food delivery operators, including Meituan Dianping and Alibaba Group’s Ele.me, to begin service by the first half of next year.

Source: Reuters

15/08/2019

Cameroon official hails higher education cooperation with China

YAOUNDE, Aug. 14 (Xinhua) — Wilfred Gabsa Nyongbet, Secretary General of Cameroon’s Ministry of Higher Education, on Wednesday hailed as “excellent” the cooperation with China in higher education.

Nyongbet made the remarks during a ceremony to bid farewell to 128 Cameroonian students who will study in China with scholarships. “This is a true demonstration of the excellent bilateral friendship between our two countries,” he said.

“They are going to learn the type of technology that we need for the emergence of Cameroon… We are willing to continue the collaboration in the higher education sector,” Nyongbet added.

Among the 128 students, 45 benefit from the Chinese government scholarship, 83 from the Confucius Institute scholarship.

Speaking at the ceremony, Chinese ambassador Wang Yingwu said the number of Chinese scholarships awarded to Cameroon students in 2019 hit a record high since 2006. “China is ready to work with Cameroon to enhance cooperation in education to a higher level,” he said.

“China is advanced in technological sectors, and there is a transfer of know-how in its cooperation with Cameroon. The scholarship is an opportunity for me to study in China, and apply what I have learned back home,” a scholarship winner Francis Yonkeu Nya told Xinhua.

More than 3,000 Cameroonian students are now studying in China, among them about 300 are beneficiaries of Chinese government scholarship, according to the Chinese embassy to Cameroon.

Source: Xinhua

15/08/2019

Pakistan observes ‘Black Day’ for Kashmir as India celebrates independence

ISLAMABAD (Reuters) – Pakistan observed a ‘Black Day’ on Thursday to coincide with India’s Independence Day celebrations, in protest at New Delhi’s decision to revoke special status for its portion of the contested Kashmir region.

India’s decision this month, along with a communications blackout and curbs on the movement of those in Indian-administered Kashmir, caused fury in Pakistan, which cut trade and transport links and expelled India’s envoy in retaliation.

Newspapers in Pakistan printed editions with black borders on Thursday and politicians, including Prime Minister Imran Khan, replaced their social media pictures with black squares.

Protests are due to be held across the country, including Azad Kashmir, the wedge of territory in the west of the region that Pakistan controls.

The largely symbolic move comes amid growing frustration in Islamabad at the lack of international response over the Kashmir dispute.

Pakistan was isolated diplomatically and faced “a world in denial” over the situation in Kashmir, Dawn, the country’s most influential English language newspaper, said in an editorial.

The 15-member United Nations Security Council could discuss the dispute as soon as Thursday, but Pakistan says it only has guaranteed support from China, which also claims part of India’s Jammu and Kashmir state.

Permanent security council member Russia said on Wednesday it supported India’s stance that the dispute should be resolved through bilateral means, while the United States has called India’s decision an internal matter for New Delhi.

In his Independence Day speech in the Indian capital, Prime Minister Narendra Modi highlighted the decision to remove the special rights of the Muslim-majority region among the bold moves of his second term, following an election victory in May.

“Today every Indian can proudly say ‘One Nation, One Constitution’,” Modi, speaking from the ramparts of the historic Red Fort, said of the decision.

Source: Reuters

14/08/2019

Hong Kong airport resumes operation after protest-forced halt

HONG KONG, Aug. 14 (Xinhua) — The Hong Kong International Airport started to resume operation on Wednesday after chaos and flight cancellations caused by protesters.

Passengers are now able to conduct check-in procedures after tickets or purchase vouchers are checked by airport staff. A demonstration area has been marked out at the arrival hall.

Airport Authority Hong Kong said earlier Wednesday that it has obtained an interim injunction to restrain persons from unlawfully and willfully obstructing or interfering with the proper use of the airport.

The authority emphasized that persons are also restrained from attending or participating in any demonstration or protest or public order event in the airport other than in the area designated by the airport authority.

The interim injunction expressly provides that nothing in the interim injunction shall be construed as authorizing any demonstration, protest or public order event contrary to the Public Order Ordinance.

Many of the passengers, who have their flights delayed or changed, are still waiting at the airport for confirmation of their departure time.

“It was totally chaos last night and those people in black were everywhere. We were very scared,” said Maria, a passenger from the Philippines. “I just hope we can fly on time today.”

“I’m very angry. Some of the protesters said they were sorry but I think they were just having fun here, obstructing us,” said Pia from Germany. “I can’t believe this could be happening in the 21st century.”

“I only wish I can leave Hong Kong safely and go back home,” she said.

As one of the busiest in the world, the Hong Kong International Airport handled an average of 200,000 travelers each day in 2018.

Frank Chan, secretary for transport and housing of the Hong Kong Special Administrative Region government, said paralyzing the airport will make Hong Kong “pay a heavy price.”

“Amid fierce regional competition, it is very easy to destroy years of achievements the airport has accomplished, but rebuilding them will be very hard,” Chan said.

Source: Xinhua

14/08/2019

China-proposed BRI designed with economic development, capacity building in mind, benefiting others, say experts

MALAYSIA-KUALA LUMPUR-BRI-NEW INCLUSIVE ASIA DIALOGUE

Participants pose for photos at the New Inclusive Asia Dialogue in Kuala Lumpur, Malaysia, Aug. 14, 2019. The China-proposed Belt and Road Initiative (BRI) was formulated with economic development agenda through increased connectivity, infrastructure and capacity building, according to academics and experts at the New Inclusive Asia Dialogue here on Wednesday. (Photo by Chong Voon Chung/Xinhua)

KUALA LUMPUR, Aug. 14 (Xinhua) — The China-proposed Belt and Road Initiative (BRI) was formulated with economic development agenda through increased connectivity, infrastructure and capacity building, according to academics and experts at a conference here on Wednesday.

Speaking at the New Inclusive Asia Dialogue, multiple experts said BRI, as a flexible economic oriented initiative, stood in contrast with attempts by certain country to piece together its own trade network, which was described as being focused on political agendas.

Dr S Mahmud Ali, an associate fellow with the University of Malaya’s Institute of China Studies, said countries like Malaysia, which aspired to reach developed nation status, had recognized the real gains to be had from participation in BRI.

Mahmud said once several on-going BRI related projects were completed in the country, the country’s economic capacity would be greatly boosted.

Malaysia does play a significant role and substantial amounts of Chinese investments funding projects will boost Malaysia’s productivity, total production capacity, its ability to export and produce good that will rise quite dramatically once these projects are completed, he said.

Proposed by China in 2013, the Belt and Road Initiative refers to the Silk Road Economic Belt and the 21st century Maritime Silk Road, which aims at building trade and infrastructure networks connecting Asia with Europe and Africa along the ancient trade routes of the Silk Road.

Chairman of the Committee of International Information of the Foreign Affairs Ministry of Kazakhstan Timur Shaimergenov said that the flexible, economically focused BRI had gained strong support due to the inclusive approach taken by China.

“The Belt and Road Initiative is a flexible economic oriented project. It does not come with political pressure but instead it is about giving participating countries the opportunity to take advantage of economic opportunities.”

Criticism against BRI has taken on a political dimension and they are completely ignoring that while BRI started as a Chinese initiative, it has really become a Eurasian initiative,” he said.

Olga Kuznetsova, a professor with the Moscow Lomonosov State University said infrastructure development had the potential to benefit countries along BRI route, calling on countries to formulate clear plans to take advantage of the economic spillover.

“Russia is interested in the development of Eurasian transport corridors and invests in the implementation of projects to create them,” she said.

Chinese Ambassador to Malaysia Bai Tian said China had made it clear that it would continue to be a supporter of fair and equitable international trade and globalization, especially in the backdrop of unilateral protectionism.

“We look forward to joining hands with Asian countries to promote trade and investment facilitation, to accelerate the process of regional free trade zone, and to deepen regional and sub-regional cooperation,” he said.

Hosted by the Center for New Inclusive Asia, a Malaysian based think tank, the two-day dialogue aims to foster better understanding of connectivity as a means to promote inclusive growth in Asia, bringing together prominent scholars, senior government officials and corporate leaders from some 10 countries and regions.

Source: Xinhua

14/08/2019

How China could use bio-waste to mass-produce cheap super-fuel for missiles

  • Scientists’ large-scale conversion of agricultural waste into fuel offers savings up to 60 per cent, they say
  • Discovery could slash military costs and bring civilian applications of hypersonic flight technology closer
Super-fuel for military aircraft costs nearly 10 times as much as ordinary jet fuel for commercial planes. Photo: Shutterstock
Super-fuel for military aircraft costs nearly 10 times as much as ordinary jet fuel for commercial planes. Photo: Shutterstock
Chinese scientists say they have developed a technology to convert bio-waste into fuel for missiles and hypersonic planes, reducing fuel costs by as much as 60 per cent.
The existing JP-10 super-fuel for military aircraft has numerous advantages including high energy density, good thermal stability and low freezing point, but it costs more than US$7,000 per tonne – nearly 10 times as much as ordinary jet fuel for commercial aircraft.
It is used mainly in cruise missiles and ramjet or scramjet engines on new-generation aircraft travelling at hypersonic speed, or five times faster than sound.
Scientists from the Dalian Institute of Chemical Physics, at the Chinese Academy of Sciences in the northeastern province of Liaoning, predicted using the new technology in the near future could reduce the cost to as low as US$2,547 per tonne.
The secret, according to their paper, published in the latest issue of German chemistry journal Angewandte Chemie, lies in cheap bio-waste.
Using agricultural and forestry residues including bran, chaff and mill dust, Professor Zhang Tao, Li Ning and colleagues discovered new chemical processes that can turn the waste to JP-10 fuel on a large scale with unprecedented efficiency.

At present, the super-fuel comes from coal tar or naphtha, and the synthesis is extremely costly and unfriendly to the environment.

The bio-JP-10 fuel can be produced by two different methods, one involving six steps of chemical reactions and the other only four, according to the paper.

China’s plan to make jet fuel from restaurant leftovers

Combining these methods with the latest technology in biomass conversion, the researchers said, the super-fuel can be mass-produced at a price equivalent to that of some of the bio-jet fuels already in commercial use, thanks to government subsidies provided for their environmental benefits.

“We believe that the future commercialisation of bio-JP-10 fuel is very promising, especially taking policy support and exemption from CO2 emission tax into consideration,” the authors wrote in the paper.

Liu Huoxing, professor at the school of energy and power engineering at Beijing University of Aeronautics and Astronautics, said civilian applications of hypersonic flight technology faced many challenges that remained to be solved, with the problem of high fuel prices being one of the headaches.

“No airline will buy a plane if the fuel costs too much, however fast it can fly,” he said.

Liu, who conducts research on engine technology for hypersonic vehicles but was not involved in the Dalian study, said the reduction of production costs for jet fuel was usually incremental and it was quite rare to see a significant drop.
“This can be an important development,” he said of the Dalian findings.
China is developing various models of hypersonic speed aircraft for military and civilian use. Some are aimed at flying distances such as Shanghai to Los Angeles in a couple of hours.

Source: SCMP

14/08/2019

Chinese scientists hail ‘incredible’ stealth breakthrough that may blind military radar systems

  • Researchers at academy of science believe electromagnetic wave model is key that will herald new era in radar detection and avoidance for military ships and aircraft
China’s J-20 stealth fighter. Photo: AFP
China’s J-20 stealth fighter. Photo: AFP
Chinese scientists have achieved a series of breakthroughs in stealth materials technology that they claim can make fighter jets and other weaponry lighter, cheaper to build and less vulnerable to radar detection.
Professor Luo Xiangang and colleagues at the Institute of Optics and Electronics, Chinese Academy of Sciences in Chengdu, Sichuan province, said they had created the world’s first mathematical model to precisely describe the behaviour of electromagnetic waves when they strike a piece of metal engraved with microscopic patterns, according to a statement posted on the academy’s website on Monday.
With their new model and breakthroughs in materials fabrication, they developed a membrane, known as a meta surface, which can absorb radar waves in the widest spectrum yet reported.
At present, stealth aircraft mainly rely on special geometry – their body shape – to deflect radar signals, but those designs can affect aerodynamic performance. They also use radar absorbing paint, which has a high density but only works against a limited frequency spectrum.

In one test, the new technology cut the strength of a reflected radar signal – measured in decibels – by between 10 and nearly 30dB in a frequency range from 0.3 to 40 gigahertz.

A stealth technologist from Fudan University in Shanghai, who was not involved in the work, said a fighter jet or warship using the new technology could feasibly fool all military radar systems in operation today.

“This detection range is incredible,” the researcher said. “I have never heard of anyone even coming close to this performance. At present, absorbing technology with an effective range of between 4 and 18 GHz is considered very, very good.”

China’s new radar system could spot stealth aircraft from at long range

The lower the signal frequency, the longer a radar’s detection range. But detailed information about a moving target can only be obtained with higher frequency radio waves. Militaries typically use a combination of radars working at different frequencies to establish lines of defence.

The Medium Extended Air Defence System, Nato’s early warning radar, operates at a frequency range of 0.3 to 1 GHz. The American Terminal High Altitude Area Defence system, the missile defence radar that caught Beijing’s attention when it was deployed in South Korea in 2017, operates at frequencies around 10 GHz.

Some airports use extremely short-range, high-frequency radars running at 20 GHz or above to monitor vehicle and plane movements on the ground, but even they might not be able to see a jet with the new stealth technology until it is overhead.

“Materials with meta surface technology are already found on military hardware in China, although what they are and where they are used remains largely classified,” the Fudan researcher said.

Professor Luo Xiangang. Photo: Baidu
Professor Luo Xiangang. Photo: Baidu

Luo and his colleagues could not be reached for comment. But according to the academy’s statement and a paper the team published in the journal Advanced Science earlier this year, the stealth breakthroughs were based upon a discovery they made several years ago.

They found that the propagation pattern of radio waves – how they travelled – in extremely narrow metallic spaces was similar to a catenary curve, a shape similar to that assumed by chains suspended by two fixed points under their own weight.

China tests stealth ‘invisibility cloaks’ on regular fighter jets
Inspired by catenary electromagnetics, the team developed a mathematical model and designed meta surfaces suitable for nearly all kinds of wave manipulation.
These included energy-absorbing materials for stealth vehicles and antennas that can be used on satellites or military aircraft.
Zhu Shining, a professor of physics specialising in meta materials at Nanjing University, said the catenary model was a “novel idea”.
“The Institute of Optics and Electronics in Chengdu has conducted long-term research in this area which paved a solid foundation for their discoveries. They have done a good job,” Zhu said.
“Scientists are exploring new features of metal materials, some of them are already in real-life applications.”
Source: SCMP
14/08/2019

China is building world’s most powerful laser radar to study Earth’s solar shield

  • New facility is designed to help scientists study particles that help deflect cosmic rays in the high atmosphere
  • Despite scepticism among some scientists, those familiar with the project insist radar will have a range about 10 times greater than existing ones
When completed the new laser radar will be used to study the high atmosphere. Photo: Handout
When completed the new laser radar will be used to study the high atmosphere. Photo: Handout
China has started building the world’s most powerful laser radar designed to study the physics of the Earth’s high atmosphere, according to state media reports and scientists informed of the project.
It is described as having a detection range of 1,000km (600 miles) – 10 times that of existing lasers – and will be used to study atmospheric particles that form the planet’s first line of defence against hostile elements from outer space such as cosmic rays and solar winds.
The facility, to be built on a site that remains classified, is expected to be up and running within four years and will form part of an ambitious project to reduce the risk from abnormal solar activities.
The radar will use a high-energy laser beam that can pierce through clouds, bypass the International Space Station and reach the outskirts of the atmosphere, beyond the orbiting height of most Earth observation satellites.
Lasers help tell ghostly story of doomed Nazi submarine U-576 and its entombed crew

There, the air becomes so thin that scientists will be able to count the number of gas atoms found within a radius of several metres.

These high-altitude observations could greatly expand our knowledge of a part of the atmosphere that has been little studied because the distances involved mean no one has been able to make direct observations from the ground.

“The large-calibre laser radar array will achieve the first detection of atmospheric density of up to 1,000km in human history,” said a statement posted on the website of the Chinese Academy of Sciences on Tuesday, a day after the launch of the project.

But the claim has been greeted with some scepticism in the scientific world.

“I think the 1,000km is a misprint!” professor Geraint Vaughan, director of observations at the National Centre for Atmospheric Science in the UK, replied when asked about the project.

Vaughan, who is also a Fellow of the Royal Meteorological Society, said that while he thought the Chinese announcement was “very interesting”, it did not seem possible with existing technology.

At present, the effective range of atmospheric lasers is about 100 kilometres.

Some other senior scientists in China and overseas also expressed doubt about the project, although they requested anonymity due to the sensitivity of the issue.

US warns airmen to beware of laser attacks near China’s military base in Djibouti
“There are other approaches, such as launching a satellite. Building such a huge, expensive machine on the ground does not make sense,” said a Beijing-based laser scientist.
But several researchers told the South China Morning Post that the project did exist, and insisted that 1,000km range was not a mistake.
Hua Dengxin, a professor at Xian University of Technology and a lead scientist in China’s laser radar development programmes, said: “I have heard of the project, yes. But I cannot speak about it.”
Powerful telescopes will pick up the signals reflected back to earth. Photo: Handout
Powerful telescopes will pick up the signals reflected back to earth. Photo: Handout

According to publicly available information, the facility will use several large optical telescopes to pick up the faint signals reflected by the high-altitude atoms when the laser is fired at them.

The project is part of the Meridian Space Weather Monitoring Project, an ambitious programme that started in 2008 to build one of the largest, most advanced observation networks on Earth to monitor and forecast solar activities.

By 2025 Meridian stations containing some of the world’s most powerful radar systems will be established across the world – with facilities in Arctic and Antarctic, South China Sea, the Gobi desert, the Middle East, Central Asia and South America.

China in race for counter-drone tech and laser weapons as it tries to catch up with US

The purpose of the Meridian project, according to the Chinese government, is to reduce the risk abnormal solar activities pose to a wide range of Chinese assets including super-high voltage power grids, wireless communication, satellite constellations, space stations or even a future base on the Moon.

Chinese laser scientists have developed some of the world’s most sophisticated systems in recent years, including ranging stations that can track the movement of satellites and space debris, which the Pentagon has claimed have temporarily blinded some American scientists.

Last year researchers based in Xian, the capital of Shaanxi province, announced that they had developed a “ laser AK-47” that could set fire to target from a distance of 800 metres.

The Chinese government is also funding the development of a laser satellite that can penetrate seawater to a depth of 500 metres from space to detect the waves generated by submarines.

The use of such a powerful laser raises concerns that passing objects such as planes, satellites or spacecraft – to say nothing of birds – may be at risk from its beams.

But Professor Qiao Yanli, engineer in chief at the Anhui Institute of Optics and Fine Mechanics, part of the Chinese Academy of Sciences, said there was an “extremely low” risk of this happening.

“The sky is enormous. Getting hit by a tiny beam is almost impossible,” he said.

Some much smaller laser radars, such as those installed in auto-driving test vehicles, have reportedly damaged digital cameras by burning a few pixels on sensor.

But spacecraft such as earth observation satellites, according to Qiao, usually have some protection mechanisms, such as a warning system, to avoid permanent damage caused by an accidental laser hit.

‘Laser AK-47’? Chinese developer answers sceptics with videos of gun being tested

Professor Li Yuqiang, a researcher at the Yunnan Observatories in Kunming, whose team has measured the distance between the Earth and the Moon by shooting lasers at a reflector placed on the lunar surface during the US Apollo 15 mission, said detecting atom-sized targets on the fringes of the atmosphere posed many technical challenges.

“The number of photons [particles of light] reflected by the sparse gas particles will be very small. Even if they can be picked up by large telescopes on the ground, the analysis will require some very good algorithms to separate the useful signals from the noise,” Li said.

“How that can be achieved is beyond the scope of my knowledge.”

Source: SCMP

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