fourth flight

The Mars Ingenuity helicopter on the surface of Mars, April 29, 2021. /CFP

NASA’s Perseverance rover has for the first time captured the low-pitched whirring of the Ingenuity helicopter’s blades as it flies through the rarefied Martian atmosphere.

The space agency on Friday released new footage shot by the six-wheeled robot of its rotorcraft companion making its fourth flight on April 30 – this time accompanied by an audio track.

The nearly three-minute-long video begins with the low rumble of the wind blowing across the Jezero Crater, where Perseverance landed in February on a mission to search for signs of ancient microbial life.

Ingenuity takes off, and its blades can be heard humming softly as they spin at nearly 2,400 rpm on the 262-meter roundtrip.

The mission’s engineers weren’t sure they would pick up the flight sound at all, given that Perseverance was parked 80 meters aware from the takeoff and landing spot.

The Martian atmosphere is about one percent the density of our planet’s, making everything much quieter than on Earth.

“This is a very good surprise,” said David Mimoun, a professor of planetary science at Institut Superieur de l’Aeronautique 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,” he added.

The SuperCam is an instrument on board Perseverance that laser-zaps rocks from a distance, to study their vapor with a device called a spectrometer that reveals their chemical composition.

It also comes with a microphone to record the sounds, which yields additional insights into the physical properties of the targets, like how hard they are.

Similarly, explained Mimoun, the new recording of Ingenuity’s flight “will be a gold mine for our understanding of the Martian atmosphere.”

Apart from having a lower volume, sounds emitted on Mars travel slower than they do on Earth, because of cold temperatures, which average minus 63 degrees Celsius on its surface.

The speed of sound on the planet is therefore around 540 mph (roughly 240 meters per second), compared to about 760 mph (roughly 340 meters per second) on Earth.

The atmosphere of Mars, made up of 96 percent carbon dioxide, tends to absorb higher-pitched sounds, so only lower-pitched sounds can travel long distances.


Japan travel news, japan travel guides, japan holiday destinations and japan reviews

LATEST NEWS

Hong Kong stocks lose support from mainland buyers who snub cheap valuations, balk at regulatory risks

G7 summit: after the political theatre, the US, Britain and EU must get back to working with China

China plans to launch a Mars sample-return mission around 2030, and more

Geely to press on with methanol-powered vehicles despite risk of failure, founder says

China’s crackdown on cryptocurrency spreads to Yunnan in southwest

China’s bitcoin crackdown: Fourth-largest bitcoin-producing province joins the country’s moves against crypto mining

As central banks explore digital currency, could NFT bonds be the future?

Skyrocketing shipping costs lift prices of goods from toys, furniture to car parts and anchovies

Trip to space with Jeff Bezos sells for $28 million

Vaccination lottery: a peek at the US$1.4 million flat aimed at moving the needle in Hong Kong’s fight against Covid-19

As TikTok shortens attention spans, China’s Netflix-like platforms struggle to keep viewers

Who is Mark Bezos? Amazon CEO Jeff Bezos picked his younger brother and BFF to come with him on Blue Origin’s first human space flight, and once called him the ‘funniest guy in my life’

Hong Kong’s home buying frenzy returns, as a record number of bidders snapped up every flat of New World’s The Pavilia Farm III project on offer in Tai Wai

Hong Kong to widen access to corporate executives’ data to professionals to enhance compliance work, deter money laundering

996 culture: Tencent-owned company offers employees a break, but with a catch

ByteDance’s news app and nearly 130 apps ordered to halt privacy infringement by China’s internet watchdog

NEWS RELATED

China tells e-commerce firms to regulate promotional phone messages

Beijing, China China‘s industry ministry on Tuesday said that it had told e-commerce giants Alibaba, JD.com and Pinduoduo to regulate their use of promotional phone messaging to users ahead of the annual June 18 shopping festival. The directive, delivered during what the ministry said was a meeting on June 11, is the latest move in an…

Read more: China tells e-commerce firms to regulate promotional phone messages

People Digest: HQ Capital MD steps down; Endowus gets chief advisory officer

Private equity firm HQ Capital managing director in Hong Kong Lucian Wu has stepped down from his role after a seven-year stint. In a separate development, Singapore-based wealth management platform Endowus has appointed banking veteran Wei Mei Tan as its chief advisory officer. HQ Capital’s MD Lucian Wu steps down…

Read more: People Digest: HQ Capital MD steps down; Endowus gets chief advisory officer

Used Gadget Specialist Aihuishou Aims for $261 Million IPO

A person checks out an Aihuishou store in 2020 in Shanghai. Photo: VCG Chinese electronics reselling platform Aihuishou has fleshed out the details of its planned IPO, setting a target of $261 million. That target would value the firm, one of the largest second-hand goods platforms in China, at a…

Read more: Used Gadget Specialist Aihuishou Aims for $261 Million IPO

How Apple Watch took on Fitbit, and won – but can Facebook steal the smartwatch crown?

The Apple Watch has come a long way since it hit our wrists six years ago.  It was initially deemed a flop in 2016 and failed to win customers over in the months after it launched. Now it’s the most popular smartwatch in the world, with a 55 per cent…

Read more: How Apple Watch took on Fitbit, and won – but can Facebook steal the smartwatch crown?

ByteDance scores its first mobile game hit in China in ongoing battle with market leader Tencent

A video game developed by TikTok owner ByteDance was China’s fifth-biggest mobile game by revenue in May, demonstrating the company’s potential as a challenger to Tencent Holdings’ dominance of the lucrative sector. One Piece: The Voyage, a pirate-themed game developed by CMGE Technology Group and Nuverse, a game studio wholly…

Read more: ByteDance scores its first mobile game hit in China in ongoing battle with market leader Tencent

Chinese pharmacy platform Yaoshibang secures $270m funding

Chinese pharmaceutical trading platform Yaoshibang, also known as Ysbang, has secured $270 million in a fresh round of financing, the company announced on Tuesday. The new round saw participation from the Chinese conglomerate Zhejiang Pearl River Investment Management, search engine giant Baidu, Green Pine Capital Partners, state-backed Guangzhou City Construction…

Read more: Chinese pharmacy platform Yaoshibang secures $270m funding

Cafe de Coral to speed up China expansion after mainland business, sops boost restaurant firm’s net profit

Hong Kong-listed Cafe de Coral Holdings, one of Asia’s largest restaurant and catering groups operating quick-service restaurants, will speed up its expansion in mainland China with 17 store openings in the pipeline. The company revealed its plans after its net profit for 2020 almost quintupled, despite lower revenue in Hong…

Read more: Cafe de Coral to speed up China expansion after mainland business, sops boost restaurant firm’s net profit

Stanley Ho’s youngest son Mario launches firm to help family offices tap investment opportunities in Greater Bay Area

Mario Ho Yau-kwan, the youngest son of the late Macau casino tycoon Stanley Ho Hung-sun, has set up a family office platform to help wealthy families tap opportunities in the fast-growing Greater Bay Area. Ho, 26, a maths whizz and the youngest finance graduate ever from the Massachusetts Institute of…

Read more: Stanley Ho’s youngest son Mario launches firm to help family offices tap investment opportunities in Greater Bay Area

Retail Giant Suning’s Founder Has Shares Frozen Amid Cash Crunch

COVID gives Japan ‘last chance’ to reverse digital defeat

How Hong Kong’s family offices can use impact investing to help fight wealth inequality

China Digest: Nutshell Therapeutics; Kolmostar in funding news

Chinese cyberattack breached dozens of high-value entities using Pulse Secure networking tool

Horizon Robotics lands USD 1.5 billion in hot autonomous driving sector

Chinese sportswear maker Xtep gets US$129 million boost from Hillhouse Capital to grow K-Swiss, Palladium brands in global markets

El Salvador’s Bitcoin Beach embraces a new legal tender, but digital divide makes it hard to ditch US dollar

OTHER NEWS