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
March 11,2020

New Delhi, Mar 11: Jyotiraditya Scindia, the Madhya Pradesh politician whose surprise exit from the Congress has brought the Kamal Nath government to the brink of collapse, joined the Bharatiya Janata Party on Wednesday. Scindia joined the BJP at an event in national capital Delhi in the presence of party chief JP Nadda.

Scindia, who was warmly welcomed by Nadda, described 10 March, the day that he exited from the Congress as one of the two life-changing days of his life. The first, he said, was 30 September 2001 when he lost his father. Scindia underscored that the Congress was not the party that it had been and had been living in denial.

Scindia had ended his 18-year-old association with the Congress on Tuesday after meetings with Home Minister Amit Shah and Prime Minister Narendra Modi.

Scindia’s exit from the Congress was followed by resignation letters by about 22 MLAs who had been sequestered in Karnataka. The resignation letters were, however, sent to the Governor and not the assembly speaker, and threatens to upend the Kamal Nath government which has a wafer-thin majority.

If the resignations are accepted, the effective strength of the MP assembly will come down to 206, leaving the Bharatiya Janata Party (BJP) with a slender majority beyond the halfway mark of 103 with its 107 MLAs. For now, the Congress is trying to persuade the MLAs to not pull down the state government.

In his resignation letter to Congress chief Sonia Gandhi that Scindia put out on Twitter soon after, he alluded to his discomfort in the party over the last year or so. “...as you well know, this is a path that has been drawing itself out over the last year,” he had written in his letter.

It was seen as a reference to the Congress settling for Kamal Nath as the chief minister after the 2018 state elections though it was Scindia who had led from the front to oust the BJP from Madhya Pradesh. Scindia’s supporters had hoped that the Congress would tell Kamal Nath to give up his second charge - as the party chief in the state - but this also didn’t happen.

The first hint that something was amiss came in November last year when Scindia removed a reference to the Congress in his Twitter bio and instead wrote “public servant and cricket enthusiast”. He had then explained the change to an effort to make the Twitter bio shorter.

Jyotyiraditya Scindia’s aunt Yashodhara Raje Scindia appeared to declare soon after that the 49-year-old would join the BJP when she welcomed his resignation, calling it “ghar wapsi” or homecoming. “Jyotiraditya was being neglected in Congress,” Yashodhara Raje Scindia said.

Scindia’s grandmother, Vijaya Raje Scindia, was one of the founders of the Jana Sangh, the precursor to the BJP. His aunt Vasundhara Raje is a former Union minister and ex-chief minister of Rajasthan and another aunt Yashodhara Raje is a former minister in the Madhya Pradesh cabinet.

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Agencies
August 7,2020

Washington, Aug 7: US President Donald Trump on Thursday (local time) signed executive orders halting all transactions with Chinese applications TikTok and WeChat within 45 days, citing national security concerns, further escalating the tensions between Beijing and Washington.

"WeChat, a messaging, social media, and electronic payment application owned by the Chinese company Tencent Holdings Ltd., reportedly has over one billion users worldwide, including users in the United States. Like TikTok, WeChat automatically captures vast swaths of information from its users. 

This data collection threatens to allow the Chinese Communist Party (CCP) access to Americans' personal and proprietary information," Trump said in a statement.

Citing reasons for the ban on WeChat, the US President said that the application captures the personal and proprietary information of Chinese nationals visiting the US, thereby providing the CCP a mechanism to keep tabs on the Chinese citizens who may be "enjoying the benefits of a free society for the first time in their lives".

"In March 2019, a researcher reportedly discovered a Chinese database containing billions of WeChat messages sent from users in not only China but also the United States, Taiwan, South Korea and Australia. WeChat, like TikTok, also reportedly censors content that the CCP deems politically sensitive and may also be used for disinformation campaigns that benefit the CCP. 

These risks have led other countries, including Australia and India, to begin restricting or banning the use of WeChat. The US must take aggressive action against the owner of WeChat to protect our national security," he added.

Earlier, Trump had issued an order banning TikTok as it "reportedly censors content that the CCP deems politically sensitive, such as content concerning protests in Hong Kong and China's treatment of Uighurs and other Muslim minorities. 

TikTok may also be used for disinformation campaigns that benefit the CCP."
US politicians have repeatedly criticised TikTok, owned by Beijing-based startup ByteDance, of being a threat to national security because of its ties to China.

The development comes as China and the US are at loggerheads on a variety of issues including Hong Kong national security law, the South China Sea, the novel coronavirus and trade.

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News Network
March 16,2020

New Delhi, Mar 16: Due to the coronavirus pandemic, most airlines in the world will be bankrupt by the end of May and only a coordinated government and industry action right now can avoid the catastrophe, said global aviation consultancy firm CAPA in a note on Monday.

"As the impact of the coronavirus and multiple government travel reactions sweep through our world, many airlines have probably already been driven into technical bankruptcy, or are at least substantially in breach of debt covenants," it stated.

Across the world, airlines have announced drastic reduction in their operations in the wake of the coronavirus outbreak. For example, Atlanta-based Delta Air Lines stated on Sunday that it would be grounding 300 aircraft in its fleet and reduce flights by 40 per cent.

The US has suspended all tourist visas for people belonging to the European Union, the UK and Ireland. Similarly, the Indian government has suspended all tourist visas and e-visas granted on or before March 11.

CAPA, in its note on Monday, said, "By the end of May-2020, most airlines in the world will be bankrupt. Coordinated government and industry action is needed - now - if catastrophe is to be avoided."

Cash reserves are running down quickly as fleets are grounded and "what flights there are operate much less than half full", it added.

"Forward bookings are far outweighed by cancellations and each time there is a new government recommendation it is to discourage flying. Demand is drying up in ways that are completely unprecedented. Normality is not yet on the horizon," it said.

India's largest airline IndiGo -- which has around 260 planes in its fleet -- said on Thursday that it has seen a decline of 15-20 per cent in daily bookings in the last few days.

The low-cost carrier had stated that it expects its quarterly earnings to be materially impacted due to such decline.

CAPA said the failure to coordinate the future will result in protectionism and much less competition.

"The alternative does not bear thinking about. An unstructured and nationalistic outcome will not be survival of the fittest.

"It will mostly consist of airlines that are the biggest and the best-supported by their governments. The system will reek of nationalism. And it will not serve the needs of the 21st century world. That is not a prospect that any responsible government should be prepared to contemplate," the consultancy firm said.

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