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 13,2024

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New Delhi: The Supreme Court took a firm stance on ‘bulldozer justice’ today, affirming that the Executive cannot bypass the Judiciary and that the legal process must not prejudge the guilt of an accused. In a significant judgment, the bench led by Justices BR Gavai and KV Viswanathan set new guidelines for demolition practices, responding to petitions challenging the controversial bulldozer actions taken against individuals accused of crimes.

The rise of this practice, termed 'bulldozer justice,' has seen authorities in various states demolish what they claim to be illegal structures belonging to accused individuals. However, multiple petitions questioned the legality and fairness of this approach, bringing the matter before the court.

Justice Gavai highlighted that owning a home is a cherished goal for many families, and an essential question was whether the Executive should have the authority to strip individuals of their shelter. “In a democracy, the rule of law protects citizens from arbitrary actions by the state. The criminal justice system must not assume guilt,” stated the bench, underscoring that due process is a fundamental right under the Constitution.

On the principle of separation of powers, the bench reinforced that the Judiciary alone holds adjudicatory powers and that the Executive cannot overstep these boundaries. Justice Gavai remarked, “When the state demolishes a home purely because its resident is accused of a crime, it violates the doctrine of separation of powers.”

The court issued a strong warning about accountability, stating that public officials who misuse their power or act arbitrarily must face consequences. Justice Gavai observed that selectively demolishing one property while ignoring similar cases suggests that the aim might be to penalize rather than enforce legality. “For most citizens, a house is the product of years of labor and dreams. Taking it away must be an action of last resort, thoroughly justified,” he said.

In its directives under Article 142 of the Constitution, the Supreme Court established new demolition guidelines. These include:

Mandatory Show-Cause Notice: No demolition should occur without first issuing a show-cause notice. The person served has a minimum of 15 days or the duration stated in local laws to respond.

Transparency of Notice Content: The notice must include specifics about the alleged unauthorized construction, the nature of the violation, and the rationale for demolition.

Hearing and Final Order: Authorities are required to hear the response of the affected individual before issuing a final order. The homeowner will have 15 days to address the issue, with demolition proceeding only if no stay order is obtained from an appellate authority.

Contempt Proceedings: Any breach of these guidelines would lead to contempt proceedings. Officials who disregard these norms will be personally accountable for restitution, with costs deducted from their salaries.

Additionally, the court mandated that all municipal bodies establish digital portals within three months, displaying show-cause notices and final orders on unauthorized structures to ensure public transparency and accountability.

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News Network
November 26,2024

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Former minister and ex-MLC C M Ibrahim claimed that he still heads the original JD(S) and asked former prime minister and party supremo H D Deve Gowda to cut ties with the BJP, so that the party can be strengthened again. He also said options are being explored to either strengthen the JD(S) or to float a new regional party.

He was speaking to media persons, in Mysuru, on Monday, after meeting JD(S) MLA and former minister G T Deve Gowda, who has expressed his displeasure that he has been sidelined in the party and the party leaders have indicated his retirement from politics.

He stated, “If Deve Gowda had joined the Congress, during the last Assembly election, he would have been a minister now. We retained him in the JD(S), to strengthen the party. Now, efforts are being made to strangulate Deve Gowda’s political career. I have discussed all matters with Deve Gowda. In two days, I will start a Karnataka state tour and meet some leaders. After that, I will meet Deve Gowda again, and then decide on the further course of action.”

Ibrahim said, “The original JD(S) is ours. I am still its state president. All documents and accounts are in our name. Even now, if Deve Gowda leaves BJP’s company and returns, we will build the JD(S) again”.

“Union Minister H D Kumaraswamy should mend his ways and stop making JD(S) into a family-owned company. The JD(S)’s situation has become hopeless. Its love for the BJP is over. He should understand this,” he said.

“When I was with Kumaraswamy, he spent just Rs 4 crore in Channapatna and won by 20,000 votes. Now, without me, he spent Rs 150 crore and still lost by 25,000 votes. Without Muslims’ support, the JD(S) cannot win a single seat. Now, it is proved that 19 MLAs of the JD(S) won in 2023, because of Muslims,” he added.

Speaking on other options available, Ibrahim said, “We have not yet decided to go with the Congress. We are only considering to establish a third front. Whether it is founding a new regional party, forming a third front, or strengthening the JD(S), will be decided shortly.”

Earlier during the day, before meeting Deve Gowda, Ibrahim had said, that 12 to 13 JD(S) MLAs were dissatisfied with the party, but like Deve Gowda, were enduring pain.

“Now, I have started the task of uniting them. I as the JD(S) state president, it is my responsibility to address our MLAs’ grievances. At present, the JD(S) is on fire and all JD(S) MLAs want to protect their respective constituency. Hence, they have started speaking one by one,” he said.

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