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NASA’s Perseverance Rover Captures Video and Audio of Fourth Ingenuity Flight

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For the first time, a spacecraft on another planet has recorded the sounds of a separate spacecraft. NASA’s Perseverance Mars rover used one of its two microphones to listen as the Ingenuity helicopter flew for the fourth time on April 30, 2021. A new video combines footage of the solar-powered helicopter taken by Perseverance’s Mastcam-Z imager with audio from a microphone belonging to the rover’s SuperCam laser instrument.

The laser zaps rocks from a distance, studying their vapor with a spectrometer to reveal their chemical composition. The instrument’s microphone records the sounds of those laser strikes, which provide information on the physical properties of the targets, such as their relative hardness. The microphone can also record ambient noise, like the Martian wind.

With the Perseverance parked 262 feet (80 meters) from the helicopter’s takeoff and landing spot, the rover mission wasn’t sure if the microphone would pick up any sound of the flight. Even during flight, when the helicopter’s blades spin at 2,537 rpm, the sound is greatly muffled by the thin Martian atmosphere. It is further obscured by Martian wind gusts during the initial moments of the flight.

Footage captured from Preserverance Rover.

“This is a very good surprise,” said David Mimoun, a professor of planetary science at Institut Supérieur de l’Aéronautique et de l’Espace (ISAE-SUPAERO) in Toulouse, France, and science lead for the SuperCam Mars microphone. “We had carried out tests and simulations that told us the microphone would barely pick up the sounds of the helicopter, as the Mars atmosphere damps the sound propagation strongly. We have been lucky to register the helicopter at such a distance. This recording will be a gold mine for our understanding of the Martian atmosphere.”

Scientists made the audio, which is recorded in mono, easier to hear by isolating the 84 hertz helicopter blade sound, reducing the frequencies below 80 hertz and above 90 hertz, and increasing the volume of the remaining signal. Some frequencies were clipped to bring out the helicopter’s hum, which is loudest when the helicopter passes through the field of view of the camera.

“This is an example of how the different payload instrument suites complement each other, resulting in information synergy,” said Soren Madsen, Perseverance payload development manager at NASA’s Jet Propulsion Laboratory (JPL) in Southern California. JPL built Perseverance as well as Ingenuity and operates both of them. “In this particular case, the microphone and video let us observe the helicopter as if we are there, and additional information, such as the Doppler shift, confirms details of the flight path.”

SuperCam is led by the Los Alamos National Laboratory in New Mexico, where the instrument’s body unit was developed. That part of the instrument includes several spectrometers, control electronics, and software. The mast unit, including the microphone, was developed and built by several laboratories of the CNRS (French research center), ISAE-Supaéro, and French universities under the contracting authority of the Centre National d’Etudes Spatiales (the French space agency). Calibration targets on the rover deck are provided by Spain’s University of Valladolid.

Arizona State University leads operations of the Mastcam-Z instrument, working in collaboration with Malin Space Science Systems in San Diego. The Mastcam-Z team includes dozens of scientists, engineers, operations specialists, managers, and students from a variety of institutions.

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Macron warns Europe could die of three challenges

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PARIS, April 25 (Xinhua) — Europe could die of three challenges it faces in security, economy and culture, French President Emmanuel Macron said Thursday in a speech on Europe at Sorbonne University in Paris.

Europe is in a situation of encirclement, pushed by many powers at its borders and sometimes within it, while some “uninhibited, regional powers” are showing their capabilities, he warned in a local live broadcast.

Macron also said that the European economic model as conceived today is no longer sustainable facing competition with the United States and China.

“In our Europe, our values, our culture are threatened,” he added, because Europe is experiencing “the cultural battle, the battle of the imaginary, of narratives, of values, which is increasingly delicate.”

This speech came seven years after his first speech on Europe at the university.

Source(s): Xinhua

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Government to reform SOEs and Aasandha system

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Minister of Finance Dr. Mohamed Shafeeq has announced plans to initiate a specialised corporate reform programme in response to concerns about the mismanagement of state-owned enterprises (SOEs).

Dr. Shafeeq emphasised the need for responsible governance within SOEs, noting that many are struggling to balance their expenditures with revenues.

Additionally, Minister Shafeeq highlighted the importance of strengthening SOEs, as only a few are generating substantial revenue for the state or serving the public effectively. He underscored the necessity for significant changes in the subsidy system and emphasised the importance of prudent spending and reducing overall expenditure. As part of this initiative, he emphasised the reform of the Aasandha system to ensure sustainability.

Furthermore, Minister Shafeeq expressed determination to implement reforms promptly, contrasting previous governments’ reluctance with President Dr. Mohamed Muizzu’s proactive stance. He affirmed the President’s commitment to reforming companies and finance without delay.

Earlier this year, President Dr. Muizzu unveiled policies aimed at transforming SOEs into profitable entities independent of state funding. The government aims to enhance corporate management and establish clear criteria for subsidies and capital allocation.

Source(s): PsmNews

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India should realize that the Maldives is not ‘taking sides,’ it’s choosing independence

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According to reports, the People’s National Congress party led by Maldives President Mohamed Muizzu won a landslide victory in Sunday’s parliamentary elections, securing 71 out of 93 seats. However, the result has made India feel nervous about the Maldives tilting away from it. Chinese analysts point out that the result of the Maldivian parliamentary elections reflects the will of the people. They assert that the Maldivian people are not choosing to lean toward China but rather they are supporting the government’s independent foreign policy.

Undoubtedly, the Maldives parliamentary elections are an internal matter for the Maldives, and China fully respects the choice made by the Maldivian people. However, some forces have malicious intentions regarding these elections.

Some Western media outlets took the opportunity to sensationalize the elections, claiming that the elections were a result of the so-called China-India geopolitical rivalry.

Furthermore, although China has never viewed the Maldives parliamentary elections as a geopolitical competition between China and other countries, some in India are worried about the Muizzu administration’s so-called pro-China and anti-India stance, viewing the Maldives elections as a zero-sum game between China and India. Some Indian media outlet even claimed that the Maldives is “tilting toward China and away from regional powerhouse and traditional benefactor India.”

India’s self-proclaimed attitude as a “benefactor” fully shows that it views South Asia as its “backyard.” Adopting a mind-set of exclusion rather than cooperation, India has always been skeptical of South Asian countries developing comprehensive cooperation with other powers. Some Indians view China’s normal cooperation with the Maldives with a cold war mentality, which is unhealthy.

The Maldives’ choice to break free from India’s control and become a truly independent country has dealt a heavy blow to India’s South Asian hegemonic mind-set. In fact, Muizzu won the Maldives presidential elections last year partially because New Delhi’s long-term pressure and interference in the Maldives’ internal affairs had sparked strong anti-India sentiment among the Maldivian people.

Liu Zongyi, secretary-general of the Research Center for China-South Asia Cooperation at the Shanghai Institutes for International Studies, told the Global Times that the result of the Maldives parliamentary elections not only demonstrates that the Maldivian people are no longer willing to follow India’s orders and have chosen an independent foreign policy, but also that they have chosen to prioritize rapid economic and social development.

In recent years, China’s economic cooperation with the Maldives has brought significant development to the Maldives in various aspects. For example, the China-Maldives Friendship Bridge, a flagship project of China’s infrastructure boom in the Maldives, is a symbol of the deep friendship between the two countries and has helped the Maldivian people realize their century-old dream.

India claims that its “Neighborhood First policy” is its core foreign policy. However, India’s aggressive behavior has turned “neighborhood first” into “India first.” The more the Indian government seeks to consolidate its hegemony in South Asia, the more discontent neighboring South Asian countries will grow with India.

India has long maintained a condescending attitude toward other South Asian countries, which is why India is increasingly unpopular in the region, said Qian Feng, director of the research department at the National Strategy Institute at Tsinghua University. India has not realized that the emergence of “anti-India” sentiment in these countries is not because they are “pro-China,” but because they are eager for independence.

The leaders of China and India have reached an important consensus that China and India are partners rather than rivals and are not threats to each other but opportunities for each other’s development. However, India has said one thing and done another in the process of implementing this consensus, according to Qian. On many issues, India demands and pressures its South Asian neighbors to take sides between it and China. This not only violates the sovereignty of these countries, potentially causing instability in the entire region, but it also distorts the China-India relationship.

The independent choices of other South Asian countries are not a “betrayal” to India but a fact that needs to be fully respected. Cooperation with China is not exclusive and does not affect relations with India. As an important country in the South Asia, India needs to adopt a more open attitude toward cooperation between regional countries and China.

Source(s): globaltimes.cn

The author is a reporter with the Global Times. opinion@globaltimes.com.cn

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