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
November 26,2024

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Islamabad: Four paramilitary personnel and two policemen have been killed and over 100 security personnel injured as the protest by supporters of jailed former prime minister Imran Khan turned violent prompting the federal government to deploy the army in the national capital along with shoot at sight orders on Tuesday, state-run media said.

Pakistan deployed the army amid a tense stand-off with Khan's supporters from his Pakistan Tehreek-e-Insaf (PTI) pushing forward by removing hurdles on their way to Islamabad's D-Chowk venue as the government vowed to foil their attempt “even if a curfew needs to be imposed.”

Radio Pakistan said a vehicle rammed into Pakistan Rangers personnel killing four Rangers officials on the Srinagar Highway in Islamabad late on Monday night. Five other Rangers personnel and several police officials too sustained severe injuries.

About five kilometres from this spot, a bunch of miscreants, equipped with weapons and ammunition, pelted stones on the Rangers personnel and carried out indiscriminate firing on the security personnel at Chungi No 26 in Rawalpindi, Radio Pakistan said.

It also reported that two policemen were killed but didn't provide any details.

According to Punjab police, one policeman was killed at Hakla interchange on Islamabad outskirts during clashes with the PTI protestors on Monday but it also did not give details about the second policeman.

Separately, Interior Minister Mohsin Naqvi said, at a late night media interaction, that more than one hundred security personnel, mostly from police, were injured and added: “One senior police officer (SP) was critically injured – he suffered a severe head injury -- due to stone-pelting by protesters.”

Radio Pakistan further reported that the Pakistan Army was called in “to deal with the miscreants with an iron hand” and “clear orders have also been issued to shoot miscreants and troublemakers on sight.”

Strongly condemning the attack on Rangers and police personnel by protesters, Prime Minister Shehbaz Sharif, in a statement, directed to immediately identify those involved in the incident and ensure they are brought to justice.

“Attacks on police and Rangers, under the guise of a so-called peaceful protest, are condemnable,” he said, adding, the anarchist group seeks bloodshed and “Pakistan cannot afford any form of chaos or bloodshed. Bloodshed for nefarious political agenda is unacceptable and highly condemnable.”

He also instructed to provide the best possible medical facilities to those injured.

Interior Minister Naqvi said the government had offered an alternative venue to the protestors to stage their activity at Sangjani in the suburbs of the capital and apparently Khan has also agreed to it.

Despite permission given by Khan, “maybe there is a leadership above Imran Khan who has refused to accept this,” he claimed and confirmed that talks were going on with the PTI to resolve the issue and that the PTI leaders were allowed to meet Khan twice on Monday to get his input.

The government is waiting for a formal response to its offer of an alternative venue for protest and “we are now waiting for PTI’s response before taking further steps,” Naqvi added.

Naqvi also warned that “come what may, the PTI would not be allowed to stage a protest at D Chowk and even hinted of imposing a curfew if needed.”

Security sources also said that all necessary measures are being taken to counter terrorist activities by disruptive and extremist elements. “All the miscreants are also being identified to bring them to justice,” the sources added.

Meanwhile, the PTI accused the authorities of using violence in which several of its supporters have been injured. A PTI spokesman told BBC Urdu that at least two supporters have also been killed but it was not confirmed from other sources so far.

Khan, 72, the PTI founder, has been in jail since August 5, 2023, and had given the ‘final call’ for the protest to force the authorities to release all prisoners, including himself, and also restore the alleged stolen mandate or victory of his party in February 8 elections as well as rescind the last month's 26th constitutional amendment allowing the government more powers over judiciary.

Earlier on Sunday, led by Khyber-Pakhtunkhwa Chief Minister Ali Amin Gandapur and Khan's wife, Bushra Bibi, the PTI supporters began their journey from the militancy-hit province with a mission to make it to D-Chowk in the national capital but faced obstacles on the roads.

The D-Chowk, close to several important government buildings: the Presidency, the PM Office, the Parliament, and the Supreme Court, is a prime location in the national capital.

The authorities had blocked the highways by placing shipping containers but the protestors accompanied by lifting equipment and other heavy machines worked their way by removing hurdles, but the hurdles did skittle their speed and plans.

The convoy entered Islamabad from Sangjani toll plaza. The party also shared footage of the KP convoy in Islamabad’s limits.

The government already banned rallies by imposing Section 144, a colonial era law used to outlaw political activities, as a high level delegation from Belarus was visiting Pakistan.

At least one policeman was killed and dozen others injured in clashes on Monday as thousands of the PTI protestors entered the territorial jurisdiction of the national capital. In one of the clashes, a policeman was killed at the Hakla interchange on Islamabad outskirts.

Another constable of the Sargodha police was injured due to “firing by miscreants” and was being treated, local media said, adding, dozens of other policemen too were injured in the clashes, but exact details were not available.

As the convoy entered the capital territory in the evening, Bushra Bibi said in a video message: “My brothers, as long as Imran is not with us, we will not end this march.”

Meanwhile, as announced on Monday, all public and private educational institutions would remain closed in view of the law and order situation both at Islamabad and Rawalpindi on Tuesday.

Khan has been implicated in dozens of cases since his government was dismissed through a no-confidence motion in 2022. He has been in Adiala Jail at Rawalpindi since last year facing over 200 cases.

His party won the largest number of seats in the February general elections despite contesting as independents as the party was denied an election symbol.

The party founder has alleged that the ruling Pakistan Muslim League-Nawaz (PML-N) and its coalition partners, including the Pakistan Peoples Party (PPP), had “stolen the mandate” to grab power at the federal level.

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News Network
November 26,2024

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Bengaluru: The Janata Dal (Secular) is grappling with its most tumultuous political crisis yet, with speculation rife about imminent defections among its lawmakers. This storm comes in the aftermath of party scion Nikhil Kumaraswamy's humiliating defeat in the Channapatna bypoll—his third consecutive electoral loss after setbacks in Mandya (2019) and Ramanagara (2023). With the regional party’s Assembly tally shrinking to 18 from 19, questions are being raised about its survival.

The murmurs of rebellion were amplified on Monday when Health Minister Dinesh Gundu Rao and Congress MLA CP Yogeshwar openly hinted at possible desertions within the JD(S) ranks. Yogeshwar, newly elected from Channapatna, declared he could orchestrate a migration of JD(S) MLAs to Congress. “I’ll meet them at the Belagavi session. Within a month, they’ll be in Congress,” he confidently stated during a televised interview. Yogeshwar has a history of engineering defections, having played a pivotal role in the collapse of the JD(S)-Congress coalition government in 2019 during his stint with the BJP.

Dinesh Gundu Rao, not mincing words, slammed the JD(S) leadership for fostering "self-serving politics," criticizing the HD Deve Gowda family for failing to nurture party talent. “There’s no trust. Their MLAs will seek survival—either in BJP or Congress,” he remarked.

Meanwhile, the expelled JD(S) state president CM Ibrahim added fuel to the fire by claiming that 12-13 MLAs are "disillusioned" with the current leadership. Speculations around senior JD(S) leader GT Deve Gowda joining Congress have also intensified. DK Shivakumar, Karnataka’s Deputy CM and Congress president, described GT Deve Gowda as a “valuable leader” who might be frustrated with the party’s internal dynamics.

While Congress leaders seem eager to poach JD(S) legislators, the BJP is not far behind in targeting the floundering party. The situation signals a decisive moment for the JD(S), as its survival now hinges on how it manages this brewing storm of discontent.

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News Network
November 22,2024

Mangaluru: A man fell victim to an online scam, losing Rs 1.7 crore after fraudsters posed as officials from TRAI. According to a complaint filed at the CEN police station, the incident began on November 11, when the complainant received a call from an unknown number at 9:49 am.

The caller, claiming to represent TRAI, alleged that another mobile number registered under the complainant's name was involved in illegal activities in Andheri (East), Mumbai. The caller further stated that an FIR was lodged against the complainant for harassment under the guise of marketing. He was instructed to contact Andheri (East) police station immediately or risk his mobile service being deactivated within two hours.

The complainant was subsequently connected to an individual named Pradeep Sawant, who claimed the complainant was implicated in a money laundering scheme linked to the Naresh Goyal fraud case. Sawant alleged that a fraudulent bank account under the complainant's name was opened at Canara Bank, Andheri, and used to purchase a SIM card for illegal activities. He warned that the complainant could face arrest.

Later, the complainant was contacted via WhatsApp video call by individuals posing as Rahul Kumar (a police officer) and Akanksha (a CBI officer). They allegedly sent fabricated CBI documents to his WhatsApp number. The fraudsters demanded money to "resolve" the case. Fearing threats, the complainant allegedly transferred Rs 1.7 crore through RTGS in batches of Rs 53 lakh, Rs 74 lakh, and Rs 44 lakh between November 13 and 19. A case has been registered at the CEN police station and an investigation is ongoing.

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