17,000-year-old kangaroo painting is Australia’s oldest Aboriginal rock art

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The team dated 27 mud wasp nests around 16 different paintings from eight rock shelters

A kangaroo painting created over 17,000 years ago by Aboriginal artists has been identified — with a little help from some ancient wasps — as Australia’s oldest intact rock art.

The two-metre-long (six-feet) artwork on the sloped ceiling of a rock shelter in Western Australia’s Kimberley region was painted in an early naturalistic style, which often features life-sized renderings of animals, according to research published Monday.

Scientists worked with the local Aboriginal community, who can trace their heritage in the region back tens of thousands of years, to establish the age of original rock artworks, many of them worked and reworked over millennia.

“The main challenge, globally, in dating ancient paintings is that they very rarely employed a pigment that can be dated with any of the current, quantitative dating techniques,” lead author Damien Finch, a geochronologist at the University of Melbourne, told AFP.

To get around this the researchers identified a way to work out the age of the painting using ancient mud wasp nests.

Finch and his colleagues found that some of the rock paintings had the remains of these nests — which can be radiocarbon dated — above and below the images.

They estimated that the kangaroo painting was between 17,500 and 17,100 years old, the oldest discovered to date. “It’s important that Indigenous knowledge and stories are not lost and continue to be shared for generations to come,” said Cissy Gore-Birch, head of the Balanggarra Aboriginal Corporation, in a statement from the University of Western Australia.

600 generations ago

She said partnerships could weave together traditional knowledge with western science, adding that the dating of the oldest known rock shelter painting “holds a great deal of significance for Aboriginal people and Australians and is an important part of Australia’s history.”

In total, the team dated 27 mud wasp nests around 16 different paintings from eight rock shelters, and found that the artworks in this same naturalistic style were produced between around 17,000 and 13,000 years ago.

The images were mostly depictions of animals, including a snake, a lizard-like figure, and three macropods — marsupials including kangaroos, wallabies and quokkas.

“This is a significant find as through these initial estimates, we can understand something of the world these ancient artists lived in,” said Finch in a statement, adding that the environment would have been cooler and drier than today.

“We can never know what was in the mind of the artist when he/she painted this piece of work more than 600 generations ago, but we do know that the Naturalistic period extended back into the Last Ice Age.”

The research, part of Australia’s largest rock art dating project, was published in the journal Nature Human Behaviour.

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Starlink Broadband Will Boost Speeds To 300Mbps But Elon Musk Doesn’t Say If It’s At The Same Price

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Elon Musk’s SpaceX is aggressively testing the Starlink satellite broadband service, and it has now been confirmed that the satellite broadband service will now get a speed boost to 300Mbps this year. that will be double of the maximum speeds that Starlink delivers to customers, which is up to 150Mbps at this time. Starlink, during the beta testing phase, till now offers users broadband speeds between 50Mbps and 150Mbps with the latency expected between 20ms and 40ms, depending on location. With the speed boost, latency will also see a reduction, closer to 20ms, which will further enhance the web browsing experience.

Elon Musk confirmed the speed boost to around 300Mbps and the latency reduction to around 20ms in response to a tweet by a user who received their Starlink broadband kit and shared a screenshot of the service offering them broadband speeds of 130Mbps at their location. “Speed will double to ~300Mb/s & latency will drop to ~20ms later this year,” he said. Quite interesting for us lot, Musk again says that Starlink will be able to cover most of the Earth by the end of the year, which may mean that pretty much every country around the world will come within the map service. That could also include India, but Starlink hasn’t confirmed a roadmap yet. “Most of Earth by end of year, all by next year, then it’s about densifying coverage. Important to note that cellular will always have the advantage in dense urban areas. Satellites are best for low to medium population density areas,” tweeted Musk.

Earlier this month, Starlink make another push for the satellite broadband service preorders. with the previous public beta testing invites sent out in October last year to sign up for the service. Anyone who is interested can register for the preorder now, and it’ll cost $99 in coverage areas. The service, at this time, is being offered in US, Canada and the UK. But there is good news for everyone around the world, because Starlink says that the satellite internet service will see near global coverage sometime this year. Could this include India? We cannot be sure just yet, but SpaceX has already submitted its recommendations to the Telecom Regulatory Authority of India (TRAI) last year, for a considered push for satellite broadband in the country.

The Starlink kit gets you a phased-arrayed’ satellite dish, a tripod and a Wi-Fi router. You can download the Starlink app for iPhone and Android phones to determine the best install location at your home or office. The Elon Musk-owned aerospace company SpaceX intends to provide high speed internet connectivity from the Starlink constellation of satellites. The aim is to offer 1Gbps internet speeds and a global coverage in due course of time, with a fairly low latency of up to 25ms, once the constellation is complete. SpaceX plans to put a total of 12,000 Lower-Earth Orbit (LEO) satellites in its Starlink constellation and wrote to the US FCC for permission, early last year, for 30,000 satellites as part of the Gen2 System. A satellite internet system in India could help push connectivity to the regions where wired broadband still remains unavailable, or at best offers inconsistent coverage due to distance or terrain.



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Decoded: the secret message on Mars rover’s giant parachute

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Cape Canaveral (U.S.) The huge parachute used by NASA’s Perseverance rover to land on Mars contained a secret message, thanks to a puzzle lover on the spacecraft team.

Systems engineer Ian Clark used a binary code to spell out “Dare Mighty Things” in the orange and white strips of the 21-metre parachute. He also included the GPS coordinates for the mission’s headquarters at the Jet Propulsion Laboratory in Pasadena, California.

Mr. Clark, a crossword hobbyist, came up with the idea two years ago. Engineers wanted an unusual pattern in the nylon fabric to know how the parachute was oriented during descent. Turning it into a secret message was “super fun”, he said Tuesday.

 

Only about six people knew about the encoded message before Thursday’s landing, according to Mr. Clark. They waited until the parachute images came back before putting out a teaser during a televised news conference on Monday.

It took just a few hours for space fans to figure it out, Mr. Clark said. Next time, he noted, “I’ll have to be a little bit more creative.” “Dare Mighty Things” — a line from President Theodore Roosevelt — is a mantra at JPL and adorns many of the centre’s walls. The trick was “trying to come up with a way of encoding it but not making it too obvious,” Mr. Clark said.

As for the GPS coordinates, the spot is 3 metres from the entrance to JPL’s visitor centre.

Another added touch not widely known until touchdown: Perseverance bears a plaque depicting all five of NASA’s Mars rovers in increasing size over the years — similar to the family car decals seen on Earth.

Deputy project manager Matt Wallace promises more so-called hidden Easter eggs. They should be visible once Perseverance’s 2-metre arm is deployed in a few days and starts photographing under the vehicle, and again when the rover is driving in a couple weeks.

“Definitely, definitely should keep a good lookout,” he urged.

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NASA releases first audio from Mars, video of Perseverance rover landing

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The video clip showed the deployment of the parachute and the rover’s touchdown on the surface of the Red Planet.

The U.S. space agency NASA on Monday released the first audio from Mars, a faint crackling recording of a gust of wind captured by the Perseverance rover

NASA also released the first video of last week’s landing of the rover, which is on a mission to search for signs of past life on the Red Planet.

A microphone did not work during the rover’s descent to the surface, but it was able to capture audio once it landed on Mars.

NASA engineers played a 60-second recording.

“What you hear there 10 seconds in is an actual wind gust on the surface of Mars picked up by the microphone and sent back to us here on Earth,” said Dave Gruel, lead engineer for the camera and microphone system on Perseverance.

The high-definition video clip, lasting three minutes and 25 seconds, shows the deployment of a red-and-white parachute with a 70.5-foot-wide (21.5-meter-wide) canopy.

It shows the heat shield dropping away after protecting Perseverance during its entry into the Martian atmosphere and the rover’s touchdown in a cloud of dust in the Jezero Crater just north of the Red Planet’s equator.

“This is the first time we’ve ever been able to capture an event like the landing on Mars,” said Michael Watkins, director of NASA’s Jet Propulsion Laboratory, which is managing the mission.

“These are really amazing videos,” Mr. Watkins said. “We binge-watched them all weekend.”

Thomas Zurbuchen, NASA’s associate administrator for science, said the video of Perseverance’s descent is “the closest you can get to landing on Mars without putting on a pressure suit.”

‘Perseverance is healthy’

Jessica Samuels, Perseverance’s surface mission manager, said the rover was operating as expected so far and engineers were conducting an intensive check of its systems and instruments.

 

“I am happy to report that Perseverance is healthy and is continuing with activities as we have been planning them,” Ms. Samuels said.

She said the team was preparing for a flight by the rover’s small helicopter drone dubbed Ingenuity.

“The team is still evaluating,” she said. “We have not locked in a site yet.”

Ingenuity will attempt the first powered flight on another planet and will have to achieve lift in an atmosphere that is just one percent the density of Earth’s.

Perseverance was launched on July 30, 2020 and landed on the surface of Mars on Thursday.

Its prime mission will last just over two years but it is likely to remain operational well beyond that. Its predecessor Curiosity is still functioning eight years after landing on Mars.

Over the coming years, Perseverance will attempt to collect 30 rock and soil samples in sealed tubes to be sent back to Earth sometime in the 2030s for lab analysis.

About the size of an SUV, the craft weighs a ton, is equipped with a seven-foot-long robotic arm, has 19 cameras, two microphones and a suite of cutting-edge instruments.

Mars was warmer and wetter in its distant past, and while previous exploration has determined the planet was habitable, Perseverance is tasked with determining whether it was actually inhabited.

It will begin drilling its first samples in summer, and along the way it will deploy new instruments to scan for organic matter, map chemical composition and zap rocks with a laser to study the vapor.

One experiment involves an instrument that can convert oxygen from Mars’ primarily carbon dioxide atmosphere, much like a plant.

The idea is that humans eventually won’t need to carry their own oxygen on hypothetical future trips, which is crucial for rocket fuel as well as for breathing.

The rover is only the fifth to set its wheels down on Mars. The feat was first accomplished in 1997, and all of them have been American.

The United States is preparing for an eventual human mission to the planet, though planning remains very preliminary.

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LinkedIn Says Tech Issue On Platform Resolved

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LinkedIn, Microsoft Corp’s professional networking site, said on Tuesday it had resolved a technical glitch on its platform, after thousands of users reported difficulties in accessing the website.

Downdetector, an outage tracking website, showed there were close to 26,000 incidents of people reporting issues with LinkedIn.

Earlier in the day, LinkedIn said an issue across its platform was causing certain functional requests to take longer or fail unexpectedly and that it was working on a fix.

California-based LinkedIn helps employers assess a candidate’s suitability for a role and employees use the platform to find new job.

Downdetector only tracks outages by collating status reports from a series of sources, including user-submitted errors on its platform. The outage might have affected a larger number of users.



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SolarWinds, Microsoft, FireEye, CrowdStrike Defend Actions In Major Hack – U.S. Senate Hearing

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WASHINGTON: Top executives at Texas-based software company SolarWinds Corp, Microsoft Corp and cybersecurity firms FireEye Inc and CrowdStrike Holdings Inc defended their conduct in breaches blamed on Russian hackers and sought to shift responsibility elsewhere in testimony to a U.S. Senate panel on Tuesday.

All four were victims in one of the worst hacks yet discovered, affecting about 100 U.S. companies and nine federal agencies. SolarWinds and Microsoft programs were used to attack others.

The executives argued for greater transparency and information-sharing about breaches, with liability protections and a system that does not punish those who come forward, similar to airline disaster investigations.

Microsoft President Brad Smith and others told the U.S. Senate’s Select Committee on Intelligence that the true scope of the latest intrusions is still unknown, because most victims are not legally required to disclose attacks unless they involve sensitive information about individuals.

Also testifying were FireEye Chief Executive Kevin Mandia, whose company was the first to discover the hackers, SolarWinds Chief Executive Sudhakar Ramakrishna, whose company’s software was hijacked by the spies to break in to a host of other organizations, and CrowdStrike Chief Executive George Kurtz, whose company is helping SolarWinds recover from the breach.

“It’s imperative for the nation that we encourage and sometimes even require better information-sharing about cyberattacks,” Smith said.

Smith said many techniques used by the hackers have not come to light and that “the attacker may have used up to a dozen different means of getting into victim networks during the past year.”

Microsoft disclosed last week that the hackers had been able to read the company’s closely guarded source code for how its programs authenticate users. At many of the victims, the hackers manipulated those programs to access new areas inside their targets.

Smith stressed that such movement was not due to programming errors on Microsoft’s part but on poor configurations and other controls on the customer’s part, including cases “where the keys to the safe and the car were left out in the open.”

In CrowdStrike’s case, hackers used a third-party vendor of Microsoft software, which had access to CrowdStrike systems, and tried but failed to get into the company’s email.

CrowdStrike’s Kurtz turned the blame on Microsoft for its complicated architecture, which he called “antiquated.”

“The threat actor took advantage of systemic weaknesses in the Windows authentication architecture, allowing it to move laterally within the network” and reach the cloud environment while bypassing multifactor authentication, Kurtz’s prepared statement said.

Where Smith appealed for government help in providing remedial instruction for cloud users, Kurtz said Microsoft should look to its own house and fix problems with its widely used Active Directory and Azure.

“Should Microsoft address the authentication architecture limitations around Active Directory and Azure Active Directory, or shift to a different methodology entirely, a considerable threat vector would be completely eliminated from one of the world’s most widely used authentication platforms,” Kurtz said.

Alex Stamos, a former Facebook and Yahoo security chief now consulting for SolarWinds, agreed with Microsoft that customers who split their resources between their own premises and Microsoft’s cloud are especially at risk, since skilled hackers can move back and forth, and should move wholly to the cloud.

But he added in an interview, “It’s also too hard to run (cloud software) Azure ID securely, and the complexity of the product creates many opportunities for attackers to escalate privileges or hide access.”



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Scientists decode how Mars may have lost its atmosphere

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The researchers believe the study has important implications for the search for habitable exoplanets

Solar winds may have led to Mars losing its atmosphere, according to a computer simulation study which confirms the long held belief that planets need a protective magnetic field to block such harmful radiations in order to sustain life.

While factors like the existence of a moderately warm, moist atmosphere and liquid water determine whether a planet can host life, the study, published in the Monthly Notices of the Royal Astronomical Society, noted that the ability of planets to generate magnetic fields around them is an overlooked aspect.

According to the scientists, Arnab Basak and Dibyendu Nandi from the Indian Institutes of Science Education and Research (IISER) Kolkata, these magnetic fields enveloping planets can act like a protective umbrella, shielding the atmosphere from the super fast plasma winds of the Sun.

On the Earth, they said a geo-dynamo mechanism generates the planet’s protective magnetosphere — an invisible shield that stops the solar wind from eroding away our atmosphere.

In the current study, the scientists simulated two scenarios of the Red Planet — one considering a young Mars with its magnetosphere intact, and the other with the planet without this force field.

 

The simulations revealed that in the young Mars, the magnetosphere may have acted as a shield stopping the solar wind from coming too close to the planet’s atmosphere thus protecting it.

Without an intrinsic magnetosphere, the researchers said the solar wind magnetic field may have first draped around, and slipped past Mars, carrying bits of the planet’s atmosphere away, eventually eroding it completely. They said the findings confirm the belief that the magnetospheres around planets play a crucial role in determining their ability to sustain life.

Alternatively, planets that lose their magnetic field eventually become inhospitable with loss of their atmosphere, the scientists added.

The researchers believe the study has important implications for the search for habitable exoplanets via initiatives like NASA’s James Webb Space Telescope and ISRO’s ExoWorlds mission.

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IIT Ropar develops alternative to alcohol-based disinfectant

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Electrolysed water can be used as “a powerful natural tool” to combat COVID-19

The IIT Ropar on Tuesday said it has developed a low-cost device to produce electrolysed water that could be used as an alternative to alcohol-based disinfectant.

A team of Dr. Vishwajeet Mehandia, assistant professor, Dr.S. Manigandan of the Department of Chemical Engineering, and Prof. C.R. Suri, head, central research facility, has developed the device. An official statement said the electrolysed water could be used to combat COVID-19.

The acidic electrolysed water has a pH of 5.0-6.5 and high concentration of Free Available Chlorine (FAC). It was reported recently that freely available chlorine can potently inactivate the virus. The electrolysed water also shows strong killing activity against bacteria, fungi and many other types of viruses, said the statement.

Unlike traditional procedure of cleaning water with chlorine treatment, electrolysed water does not harm humans. It also shows strong activity against food-borne pathogens that could be beneficial for food and agricultural industries, it said.

“We have successfully developed the electrolysed water from the tap water in our laboratory with a pH of 5.0-6.5 and a high concentration of FAC. It can be prepared within five minutes and is stable up to one week. We have tested the stability of electrolysed water for up to 48 hours,” said Dr. Mehandia.

Prof. Suri said, “It can be used in healthcare, food safety, water treatment, and general sanitation.”

Dr. Manigandan said the electrolysed water can be used as “a powerful natural tool” in the fight against the COVID-19 virus. It is non-toxic and non-flammable and therefore does not require hazardous or chemical storage or handling precautions. Nor are there any special shipping or export requirements.”

The team is also in touch with a few industrial partners to commercialise the technology, he said.

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In Photos: Sony SRS–RA3000 Smart Speaker With 360-Degree Audio Launched in India

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Japanese Electronics manufacturer Sony yesterday launched its Sony SRS-RA3000 smart speaker that comes with 360-degree audio. The wireless speaker from Sony comes with Bluetooth and Wi-Fi connectivity. Having launched in the European market in January this year, the Sony SRS-RA3000 has been launched in India at a price of Rs 19,990 and will be available for purchase starting February 4 on Amazon, Sony retail stores, ShopatSC.com, and other major retailers.

Japanese Electronics manufacturer Sony yesterday launched its Sony SRS-RA3000 smart speaker that comes with 360-degree audio. The wireless speaker from Sony comes with Bluetooth and Wi-Fi connectivity. Having launched in the European market in January this year, the Sony SRS-RA3000 has been launched in India at a price of Rs 19,990 and will be available for purchase starting February 4 on Amazon, Sony retail stores, ShopatSC.com, and other major retailers.

The Sony SRS-RA3000 has two 17mm tweeter units, one 80mm full range speaker, and two passive radiators that measure 103x37mm. The speaker also boasts of other features like 360 Reality Audio surround sound, custom equalisers, digital sound enhancement engine, auto volume, and automatic sound calibration.

The Sony SRS-RA3000 has two 17mm tweeter units, one 80mm full range speaker, and two passive radiators that measure 103x37mm. The speaker also boasts of other features like 360 Reality Audio surround sound, custom equalisers, digital sound enhancement engine, auto volume, and automatic sound calibration.

In terms of connectivity, the Sony SRS-RA3000 comes with Bluetooth, Wi-Fi, and a 3.5mm audio jack. Further, it also works with Google Assistant, Amazon's Alexa, and Spotify Connect.

The Sony SRS-RA3000 smart speaker offers ambient room-filliong sound which bounces off music both horizontally and vertically. The 360 Reality Audio incorporates three-dimensional sound location data in order to measure the acoustics to provide optimal sound.

Sony SRS-RA3000 can also be operated with your voice, as the smart speaker supports both Google Assistant and Amazon's Alexa as virtual assistants. The speaker also calibrates the sound and adjusts the volume so parts of the room don't get too loud. The buttons to control the Sony SRS-RA3000 are placed on top of the speaker.

Sony SRS-RA3000 can also be operated with your voice, as the smart speaker supports both Google Assistant and Amazon’s Alexa as virtual assistants. The speaker also calibrates the sound and adjusts the volume so parts of the room don’t get too loud. The buttons to control the Sony SRS-RA3000 are placed on top of the speaker.