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
May 4,2024

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Mangaluru, May 4: A tragic incident unfurled last evening in Subrahmanya of Kadaba taluk in Dakshina Kananda, where a young gentleman, who had recently entered the bonds of matrimony a mere ten days hence, met his untimely demise due to a lightning strike.

As twilight descended, a tempestuous thunderstorm, accompanied by billowing rain clouds, cast its shadow over the locale.

Somasundar was diligently engaged in the task of piling up dried nuts in the yard to shield them from the impending deluge, when fate cruelly intervened, subjecting him to the fatal force of a lightning bolt.

Despite the expeditious efforts to convey him to Kadaba Community Hospital subsequent to his sudden indisposition, he tragically succumbed to his injuries. 

Somasundar, who operated a car washing enterprise in proximity to Subrahmanya, is mourned by his mother, sister, and wife.

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News Network
April 30,2024

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Gaza civil defense agency has warned of a looming health disaster in the besieged Strip as the decomposition of dead bodies under the rubble of buildings destroyed by the relentless Israeli bombings accelerates.

The agency pointed on Tuesday to the risk of diseases and epidemics associated with the public decomposition of thousands of bodies due to rising temperature.

“The continued accumulation of thousands of bodies under the rubble has begun to cause the spread of disease and epidemics, especially with the onset of summer and the rise in temperatures, which accelerates the process of decomposition,” it said in a statement.

Seven months into the war, the Geneva-based Euro-Mediterranean Human Rights Monitor warned earlier that the decomposition of dead bodies for long periods leads to the transmission of serious diseases, including blood-borne viruses and tuberculosis.

"Gastrointestinal infections like cholera can also be easily spread through direct contact with dead bodies leaking excrement, soiled clothing, or contaminated tools or vehicles," it added.

In another report last week, Euro-Med Monitor also warned that thousands of corpses left in the streets or beneath house debris are rotting and being consumed by cats and dogs, which is an additional factor contributing to the spread of infectious diseases.

"The spread threatens the environment and public health in the Strip, and health authorities in the Strip have detected about one million cases of infectious diseases," the report added.

The Global Nutrition Group also estimates that at least 90 percent of the Gaza Strip’s children under the age of five are affected by one or more infectious diseases and that 70 percent have had diarrhea in the past two weeks—a 23-fold increase compared with the 2022 baseline.

Unexpected blistering temperatures across Gaza have also added to the daily misery faced by the enclave’s people and sparked new fears of disease outbreaks amid a lack of sufficient clean water and waste disposal, the UN Relief and Works Agency for Palestine Refugees in the Near East, also known as UNRWA said on Thursday.

This comes as the death toll from Israel's genocidal campaign against Gaza rose to 34,535. Among the dead are more than 14,500 children and 9,500 women.

Since the war began on October 7, nearly 85 percent of Gaza's 2.3 million people have been displaced.

Vast swathes of the besieged territory are in ruins as Israel continues its onslaught, dropping at least 75,000 tons of explosives on Gaza, according to the Gaza Media Office.

Earlier this month, UNRWA, said 62 percent of all houses in the besieged territory have been damaged or destroyed.

Gaza Media Office recently reported that nearly 90,000 housing units have been destroyed while nearly 300,000 units have been damaged by the Israeli air and ground offensive.

The United Nations Office for the Coordination of Humanitarian Affairs (OCHA) reported on Monday that nearly 37.5 million tons of conflict-generated debris are estimated to be present throughout Gaza, based on assessments by UN bodies.

The world’s hunger watchdog, known as the Integrated Food-Security Phase Classification (IPC), said in a report published on March 18 that about 1.1 million Palestinians in Gaza are living through catastrophic food insecurity, warning that famine is likely to strike by May in northern Gaza and can spread across the territory by July.

Francesca Albanese, the UN special rapporteur on the occupied Palestinian territory, said in a report published in late March that there were clear indications that Israel has violated three of the five acts listed under the UN Genocide Convention.

These acts Albanese said were “killing members of the group; causing serious bodily or mental harm to the group’s members; and deliberately inflicting on the group conditions of life calculated to bring about its physical destruction in whole or in part.”

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News Network
April 30,2024

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Guwahati: Union Home Minister Amit Shah on Tuesday condemned the alleged sexual abuse of women involving Lok Sabha MP Prajwal Revanna, asserting that the BJP will not tolerate any insult to women.

Revanna (33) is the BJP-JD(S) alliance candidate for Hassan Lok Sabha constituency, which went to polls on April 26.

Earlier in the day, the JD(S) suspended Revanna from the party with immediate effect.

“The issue regarding Revanna that has been reported in the media is very hurtful and cannot be tolerated in any way,” Shah told a press conference here.

“The BJP’s stand is very clear; we will not tolerate any insult to ‘matri aur nari shakti’ (women empowerment),” he asserted.

Some explicit video clips allegedly involving Prajwal Revanna, the grandson of former prime minister H D Deve Gowda, were circulated in Hassan over the last few days.

The home minister said Congress has been alleging that an NDA partner’s candidate is involved in the incident, “but I just want to ask a small question - whose government is there in that state (Karnataka)?”

“The Congress is in power in Karnataka, and this matter must have come to their attention. Why has it not taken any action on it so far? We cannot take any action as law and order is a state issue,” Shah said.

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