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 13,2024

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Bengaluru: An estimated overall 10.14 per cent voter turnout was recorded during the first two hours, since the voting began for bypolls to three Assembly segments in Karnataka on Wednesday, election officials said.

The voting began at 7 am and will go on till 6 pm.

More than seven lakh voters are eligible to cast their votes in about 770 polling stations in Shiggaon, Sandur and Channapatna, where a total of 45 candidates are in the fray.

While Channapatna recorded 10.34 per cent voter turnout till 9 am, it was 10.08 per cent in Shiggaon, and 9.99 per cent in Sandur, election officials said.

Voters, including women and elderly were seen queuing up in front of polling booths in these segments.

By-polls for Sandur, Shiggaon, and Channapatna are necessitated, as the seats fell vacant following the election of their respective representatives -- E Tukaram of Congress, former CM Basavaraj Bommai of BJP, and Union Minister H D Kumaraswamy of JD(S) -- to Lok Sabha in May elections.

As many as 31 candidates are in the fray from Channapatna, while Sandur and Shiggaon have six and eight contenders, respectively.

Elaborate security arrangements have been made in the three segments for the smooth conduct of the polls.

The by-polls will witness a straight fight between the ruling Congress and BJP in Sandur and Shiggaon segments, while in Channapatna, JD(S) which is part of the NDA alliance is in contest against the grand old party.

Among the three segments, Channapatna is considered to be a "high profile", where the contest is between C P Yogeeshwara, a five time MLA from the segment and former Minister, who joined the Congress quitting BJP ahead of nomination, and actor-turned -politician Nikhil Kumaraswamy, who is Kumaraswamy’s son and former PM H D Deve Gowda's grandson.

BJP's Bharath Bommai, son of Basavaraj Bommai, is fighting Congress Yasir Ahmed Khan Pathan, who had faced defeat against the former Chief Minister in the 2023 Assembly polls, in Shiggaon.

Bharath Bommai and his father cast their vote at a polling booth in Shiggaon segment.

In Sandur, Bellary MP Tukaram's wife E Annapurna of Congress is contesting from the seat vacated by her husband, against, BJP ST Morcha president Bangaru Hanumanthu, who is considered close to party leader and former mining barron G Janardhan Reddy.

Annapurna, Tukaram and other family members cast their votes at a booth in the segment.

With Nikhil Kumaraswamy and Bharath Bommai contesting, the third generation of Gowda and Bommai families are in the fray in this by-poll. Both their fathers and grandfathers have served as Karnataka's Chief Ministers in the past.

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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 12,2024

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The Palestinian Hamas resistance movement says its fighters have killed at least 20 Israeli soldiers in northern parts of the besieged Gaza Strip in just two days, in retaliation for the occupying regime’s genocidal war on the Palestinian territory.

In a statement on Monday evening, Hamas said that fighters of its military wing, al-Qassam Brigades, “killed at least five occupation soldiers” in northern parts of the coastal territory earlier in the day.

It added that Hamas fighters also killed 15 Israeli soldiers in the war-ravaged region on Sunday.

The resistance movement’s “qualitative operation … confirms once again the failure of the criminal Zionist entity to suppress and eradicate the Palestinian resistance, which continues to direct qualitative strikes against its terrorist soldiers,” Hamas further said on its Telegram channel.

Palestinians have increased their resistance operations in the face of intensified Israeli aggression in northern Gaza that has claimed the lives of more than 1,000 over the past weeks.

“Our valiant resistance is waging a war of attrition with the criminal enemy, inflicting daily losses on its soldiers and vehicles, and all of [Israeli prime minister Benjamin] Netanyahu’s bets and dreams of achieving any of his goals are failing,” the Gaza-based resistance movement added.

Hamas also vowed that Israel’s ongoing crimes and aggression against Gaza would be met with increased resistance and painful strikes, which will continue until the aggression against Palestinians ends and the regime fully withdraws from the blockaded territory.

As the war in Gaza enters its 14th month, the Health Ministry reports that Israeli attacks have killed at least 43,603 Palestinians and wounded 102,929 others.

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