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 15,2024

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Iran’s Islamic Revolution Guards Corps (IRGC) has killed or captured 69 terrorists linked to the Israeli spy agency Mossad during a major counterterrorism drill in the country's southeast, its spokesman says.  

General Ahmad Shafaei, the spokesman for the “Martyrs of Security” drill, said Friday that a total of 23 terrorists have been killed and another 46 arrested in various clean-up operations ever since the IRGC Ground Force launched it in the Sistan and Baluchestan province on November 1.

Seven terrorists have also turned themselves in during the period.

“The undeniable fact about terrorists is that they rely on arrogant powers, particularly the intelligence service of the wicked and vicious Zionist regime," Shafaei said.

“Unfortunately, weapons and munitions at terrorists’ disposal are among the most sophisticated ones in the world. This accounts for their heavy dependence.” 

The official stated that several members of the disbanded terror teams were non-Iranian nationals, who had been hired by foreign intelligence agencies to carry out acts of sabotage and terror inside Iran.

In a most recent operation, six terrorists were arrested and four others were eliminated, three of whom were non-Iranians, he added. 

On October 26, ten members of Iran's law enforcement forces were killed in a terrorist attack in the Gohar Kuh district of Taftan in the Sistan and Baluchestan province.

The so-called Jaish al-Adl terrorist group claimed responsibility for the assault, which was one of the deadliest in the province in recent months.

The group has carried out numerous terrorist attacks in Iran, primarily in Sistan and Baluchestan.

Its tactics include the abduction of border guards as well as targeting civilians and police stations within the province to incite chaos and disorder.

In January, Iran launched a military operation during which the headquarters of the Pakistan-based terrorist group was targeted in missile strikes, destroying its infrastructure.

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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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News Network
November 21,2024

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Hamas says the Israeli regime’s sole objective lies in “erasing” the entirety of the Palestinian population from across the Palestinian territories.

Khalil al-Hayya, a ranking official with the Gaza Strip-based Palestinian resistance movement, made the remarks to the Palestinian al-Aqsa TV on Wednesday.

“The occupation targets everyone—it strikes hospitals, civil defense, women, children, and the elderly,” he said, adding that the regime sought to “empty Gaza of its residents, and displace the Palestinian people to fulfill its dreams of building a Zionist Jewish state across all of Palestine.”

The remarks came amid the regime’s October 2023-present war of genocide on the coastal sliver that has so far claimed the lives of nearly 44,000 Palestinians, mostly women and children.

“This unprecedented aggression in modern times evokes scenes from the dark ages of human history, having crossed all red lines and exceeded every expectation of brutality in the modern era,” the Palestinian official lamented.

He also regretted that the regime had added “systematic and dangerous starvation to its aggression, falsely claiming before the world that it allows 250 [aid] trucks into Gaza daily. In reality, the number of trucks is far fewer.”

Hayya, meanwhile, regretted that “scenes of children torn apart, women screaming over their children, and heart-wrenching destruction have failed to stir enough humanity to stop these crimes.”

He decried the United States for vetoing the United Nations Security Council’s resolutions that are aimed at bringing about a potential ceasefire in the war, saying this indicated Washington’s “partnership in the aggression” and a simultaneous siege that the Israeli regime has been enforcing on Gaza.

Addressing Israeli Prime Minister Benjamin Netanyahu, the official asserted that, despite what the Israeli official is after, Hamas would not hand over the regime’s captives “without [the regime’s] stopping the war.”

He called Netanyahu “the main obstacle” in the way of cessation of the aggression, saying the Israeli premier “blocks any progress for political reasons,” and citing his preventing conclusion of a ceasefire agreement in July.

Hayya also warned that the regime sought to expand the war beyond Gaza, but asserted that its goals are “impossible and will never happen.”

“Today, the enemy exposes its true intentions of extermination and displacement, but it will fail,” he stressed.

“The Palestinian people are resilient and will not surrender, as they believe in their humanitarian and political cause. The enemy and its allies will not succeed in achieving their goals. This steadfast people will endure, and the occupation will not prevail against them.”

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