NASA's Voyager 2 probe nearing interstellar space

Agencies
October 7, 2018

NASA's Voyager 2 probe is approaching interstellar space and has detected an increase in cosmic rays that originate outside our solar system, the US space agency said.

Launched in 1977, Voyager 2 is a little less than 17.7 billion kilometres from Earth, or more than 118 times the distance from Earth to the Sun. Since 2007 the probe has been travelling through the outermost layer of the heliosphere -- the vast bubble around the Sun and the planets dominated by solar material and magnetic fields.

Voyager scientists have been watching for the spacecraft to reach the outer boundary of the heliosphere, known as the heliopause. Once Voyager 2 exits the heliosphere, it will become the second human-made object, after Voyager 1, to enter interstellar space.

Since late August, the Cosmic Ray Subsystem instrument on Voyager 2 has measured about a five per cent increase in the rate of cosmic rays hitting the spacecraft compared to early August.

The probe's Low-Energy Charged Particle instrument has detected a similar increase in higher-energy cosmic rays. Cosmic rays are fast-moving particles that originate outside the solar system. Some of these cosmic rays are blocked by the heliosphere, so mission planners expect that Voyager 2 will measure an increase in the rate of cosmic rays as it approaches and crosses the boundary of the heliosphere.

In May 2012, Voyager 1 experienced an increase in the rate of cosmic rays similar to what Voyager 2 is now detecting. That was about three months before Voyager 1 crossed the heliopause and entered interstellar space. However, Voyager team members note that the increase in cosmic rays is not a definitive sign that the probe is about to cross the heliopause.

Voyager 2 is in a different location in the heliosheath -- the outer region of the heliosphere -- than Voyager 1 had been, and possible differences in these locations mean Voyager 2 may experience a different exit timeline than Voyager 1.

The fact that Voyager 2 may be approaching the heliopause six years after Voyager 1 is also relevant because the heliopause moves inward and outward during the Sun's 11-year activity cycle.

Solar activity refers to emissions from the Sun, including solar flares and eruptions of material called coronal mass ejections. During the 11-year solar cycle, the Sun reaches both a maximum and a minimum level of activity.

"We're seeing a change in the environment around Voyager 2, there's no doubt about that," said Ed Stone, Voyager Project Scientist.

"We're going to learn a lot in the coming months, but we still don't know when we'll reach the heliopause. We're not there yet -- that is one thing I can say with confidence," said Stone.

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News Network
January 22,2020

Jan 22: Microsoft Corp’s chief executive officer said he worries that mistrust between the US and China will increase technology costs and hurt economic growth at a critical time.

Using the $470 billion semiconductor industry as an example of a sector that is already globally interconnected, Satya Nadella said the two countries will have to find ways to work together, rather than creating different supply chains for each country.

“All you are doing is increasing transaction costs for everybody if you completely separate,” Nadella said in an interview with Bloomberg News Editor-in-Chief John Micklethwait at Bloomberg’s The Year Ahead conference in Davos. That’s a concern as the executive said the world is on the cusp of a revolution around technology and artificial intelligence.

“If we take steps back in trust or increase transaction costs around technology, all we are doing is sacrificing global economic growth,” he said.

The agreement signed last week between the US and China was “not sufficient,” said Nadella, but represented “progress” on the issue of intellectual property protections for US technology companies working with China.

Nadella said he worries about the development of two separate internets, noting that to some degree they already exist “and they will get amplified in the future” with massive technology companies already in place in China.

The viewpoint clashes with Microsoft co-founder Bill Gates, who has been sceptical about the idea that ongoing US-China trade tensions could ever lead to a bifurcated system of two internets.

China and the US are the two leading AI superpowers, however the cooling political relations between them have slowed the international collaboration.

Nadella also warned that countries that fail to attract immigrants will lose out as the global tech industry continues to grow. The CEO has previously voiced concern about India’s Citizenship Amendment Act, calling it “sad.”

“However, Nadella said he remained hopeful.

“The fact that there is a 70-year history of nation-building, I think it’s a very strong foundation. I grew up in that country. I’m proud of that heritage. I’m influenced by that experience.”

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Agencies
March 9,2020

Mumbai, Mar 9: The mayhem in domestic stock markets deepened with the BSE Sensex falling over 2,400 points and the Nifty50 trading below 10,400 points.

The plunge in the domestic indices was in line with the global markets on persistent fears of economic impact of the coronavirus epidemic.

Stocks of Reliance Industries registered the biggest fall in over 10 years as it fell to Rs 1,094.95 per share. At 1.34 p.m., it was trading at Rs 1,100, lower by Rs 170.05 or 13.39 per cent from its previous close. The stock fell most since October 2008.

The benchmark index of BSE Sensex was trading at 35,232.67 points, lower by 2,343.95 points or 6.24% from the previous close of 37,576.62 points. 

It had opened at the intra-day high of 36,950.20 and has so far touched a low of 35,109.18.

The Nifty50 on the National Stock Exchange was trading at 10,314.25 points, lower by 675.20 points or 6.14% from the previous close. 

It was a sell-off across sectors, led by financial, metal, energy and IT stocks - which weighed on the markets.

Further, crude oil prices also slumped around 30% on Monday as Organization of Petroleum Exporting Countries (OEPC) failed to agree on an output cut deal, eventually causing Saudi Arabia to cut its prices as it is likely to increase its production. Saudi Arabia's stance has already raised concerns of an all-out price war.

Brent crude futures are currently trading around $34 per barrel.

On Saturday, Saudi Arabia announced massive discounts to its official selling prices for April, and the nation is reportedly preparing to increase its production above the 10 million barrel per day mark, according to reports.

As per analysts, the oil market witnessed the worst price fall on Monday since the 1991 Gulf War.

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News Network
February 13,2020

Guwahati, Feb 13: Hours after Assam's updated citizenship data disappeared from the website 'nrcassam.nic.in', an FIR was filed against a former NRC official for allegedly failing to submit the password to the sensitive document before quitting her job.

Talking to news agency on Thursday, NRC state coordinator Hitesh Dev Sarma said the complaint against former NRC project officer was filed under Official Secrets Act in Paltan Bazar police station here, as she "did not provide the password to the document, despite written reminders".

"She failed to surrender the password even after tendering her resignation on November 11 last year. She was a contractual employee and no longer authorised to hold the password, after quitting her job. An FIR has been filed against the former NRC project officer on Wednesday for violating the Official Secrets Act," he said.

Sarma also stated that the NRC office had written to her on several occasions for submitting the password, but did not get any response.

"We knew (she had resigned) and, therefore, sent several letters to her for handing over the password. But as she did not respond all these months, we filed a complaint against her yesterday for violating the Official Secrets Act.

"We must know if she has tampered with the sensitive information, after resigning," he added. The NRC state coordinator, however, refuted allegations of "malafide intent" involved in the matter.

"...this (cloud service provided by IT major Wipro) was not renewed by the earlier coordinator. So, the data went offline from December 15 last year. I assumed charge only on December 24," Sarma, who had gone on leave for a weeks after being appointed as the NRC state coordinator, clarified.

He also said that the state coordination committee had discussed the issue in its meeting on January 30 and wrote to Wipro during the first week of February.

"Once Wipro makes the data live, it will be available to the public. We hope that people will be able to access it in the next 2-3 days," Sarma claimed.

Reacting to the development, Wipro had said: "The IT Services Contract was not renewed by the authorities upon its expiry in October, 2019. However, as a gesture of goodwill, the company continued to pay the hosting service fee until January-end, 2020."

In another FIR filed with state criminal investigation department on Wednesday, NGO Assam Public Works (APW) alleged that former NRC Assam coordinator Prateek Hajela tampered with the final NRC list - published on August 31, 2019.

APW member Rajib Deka, in his complaint, accused Hajela of disobeying orders and directions of the Supreme Court, forgery of public register and committed offences under cyber laws for altering or changing public records by misusing his powers and position.

The NGO also said that after publication of the final list, several social networks and sections of the media had reported anomalies, insisting that many 'doubtful' persons were able to insert their names in the final list.

The Centre on Wednesday asserted that NRC data in Assam was safe even though some technical issues have been detected, which would be resolved soon.

Senior journalist-cum-RTI activist Saket Gokhale had sent an application to the NIC, the IT wing of the government, seeking a copy of the contract with Wipro.

"The Assam NRC data suddenly vanishing from the website (& the lack of data security) is incredibly shady. I've filed an RTI with the NIC specifically asking about details of the contract with Wipro, name of the cloud service provider, & all contracts signed for hosting this," he tweeted, while attaching a copy of the RTI application.

Leader of the Opposition in Assam Assembly and Congress leader Debabrata Saikia has also written to the Registrar General of India, requesting him to look into the fiasco urgently.

"It is a mystery as to why the online data should vanish all of a sudden, especially as the process to file appeals was yet to begin, all because of the go-slow attitude adopted by the NRC Authority. There is, therefore, ample scope to suspect that disappearance of online data is a malafide act," he had insisted.

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