Mission Accomplished: Sunita,Akihiko tackle ISS coolant leak

November 2, 2012

mission

Houston, November 2: Indian American record-setting NASA astronaut Sunita Williams along with another cosmonaut today troubleshot an ammonia leak in the International Space Station's cooling system, accomplishing the chief objective of their marathon six-hour excursion outside the orbiting lab.

Williams and Japanese space flyer Akihiko Hoshide ventured yesterday outside the space station at 1229 GMT (1759 IST) and just a little more than five hours later, they had reconfigured some coolant lines and deployed a spare radiator, isolating the leak.

"Suni and Aki, heartfelt congratulations to you," NASA astronaut Mike Fincke, who helped walk the astronauts through their tasks from mission control at the agency's Johnson Space Center in Houston, said at 1741 GMT (2311 IST).

"We accomplished just about everything we set out to do today. A big, huge congratulations to you guys on the ground for putting this together," Williams responded.


Each of the space station's eight huge solar panels has its own associated power system, and circulating ammonia helps cool this gear down.

The leak, which NASA and its space station partners first noticed in 2007, has the potential to affect one of these power channels if it's not fixed.

Today's Spacewalk, or extra-vehicular activity (EVA), a crucial step in that process was slated to last about 6 1/2 hours, and it proceeded pretty much on schedule.

By 0128 hrs IST, both astronauts had re-entered the space station through its airlock, and the spacewalk was officially over nine minutes later.

At the start of the spacewalk, Williams — commander of the station's current Expedition 33 — and Hoshide made their way over to the port side of the station's backbone-like truss.

They rejiggered some lines in the affected coolant system and installed a spare radiator.

NASA officials hope this stops the leak, which they suspect may be coming from the old (swapped-out) radiator.

If ammonia continues to escape, the station's operators will eventually have to try something else.

But there likely won't be an urgent need for a new fix, since the spare radiator should provide enough ammonia to keep the coolant system operating until next October or so, officials said.

It should come as no surprise that Williams and Hoshide ticked off their tasks efficiently today, for the two are seasoned space walkers.

In late August and early September, they replaced a vital power unit on the station over the course of two spacewalks, defeating an unexpectedly stubborn stuck bolt in the process.

Today's EVA was the seventh for Williams, the third for Hoshide and the 138th to depart from the station overall.




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Agencies
May 31,2020

Minneapolis, May 31: The full Minnesota National Guard was activated for the first time since World War Two after four nights of civil unrest that has spread to other U.S. cities following the death of George Floyd, a black man shown on video gasping for breath as a white Minneapolis policeman knelt on his neck.

Minnesota Governor Tim Walz said the deployment was necessary because outside agitators were using protests over Monday’s death of George Floyd to sow chaos and that he expected Saturday night’s demonstrations to be the fiercest so far.

From Minneapolis to several other major cities including New York, Atlanta and Washington, protesters clashed with police late on Friday in a rising tide of anger over the treatment of minorities by law enforcement.

“We are under assault,” Walz, a first-term governor elected from Minnesota’s Democratic-Farmer-Labor Party, told a briefing on Saturday. “Order needs to be restored. ... We will use our full strength of goodness and righteousness to make sure this ends.”

He said he believed a “tightly controlled” group of outsiders, including white supremacists and drug cartel members, were instigating some of the violence in Minnesota’s largest city, but he did not give specific evidence of this when asked by reporters.

As many as 80% of those arrested were from outside the state, Walz said. But detention records show just eight non-Minnesota residents have been booked into the Hennepin County Jail since Tuesday, and it was unclear whether all of them were arrested in connection with the Minneapolis unrest.

The Republican Trump administration suggested civil disturbances were being orchestrated from the political left.

“In many places, it appears the violence is planned, organized and driven by anarchic and left extremist groups - far-left extremist groups ... many of whom travel from outside the state to promote violence,” U.S. Attorney William Barr said in a statement.

In an extraordinary move, the Pentagon said it put military units on a four-hour alert to be ready if requested by Walz to help keep the peace.

Activists staged another round of protests on Saturday in at least a dozen major U.S. cities coast to coast, including Seattle, Los Angeles, Chicago, Cleveland, Dallas, Atlanta, New York and Atlanta.

In the nation’s capital, hundreds of demonstrators assembled near the Justice Department headquarters, then marched toward the U.S. Capitol, chanting, “Black lives matter,” and “I can’t breathe,” a rallying cry echoing Floyd’s dying words.

Many later ended up near the White House, where they faced off with shield-carrying police, some mounted on horseback.

The streets of Minneapolis were largely quiet during daylight on Saturday, though several National Guard armoured personnel carriers were seen rolling through town.

On Friday, in defiance of a newly imposed curfew, Minneapolis protesters took to the streets for a fourth night - albeit in smaller numbers than before - despite the announcement hours earlier of murder charges filed against Derek Chauvin, the policeman seen in video footage kneeling on Floyd’s neck.

Three other officers fired from the police department with Chauvin on Tuesday are also under criminal investigation in the case, prosecutors said.

The video of Floyd’s arrest - captured by an onlooker’s cellphone as he repeatedly groaned, “please, I can’t breathe” before becoming motionless - triggered an outpouring of rage that civil rights activists said has long simmered in Minneapolis and cities across the country over persistent racial bias in the U.S. criminal justice system.

‘PAINS ME SO MUCH’

The mood was sombre on Saturday in the Minneapolis neighbourhood of Lyndale, where dozens of people surveyed the damage while sweeping up broken glass and debris.

“It pains me so much,” said Luke Kallstrom, 27, a financial analyst, standing in the threshold of a fire-gutted post office. “This does not honour the man who was wrongfully taken away from us.”

Some of Friday’s most chaotic scenes were in the New York City borough of Brooklyn, where police armed with batons and pepper spray made more than 200 arrests in sometimes violent clashes. Several officers were injured, police said.

In Washington, President Donald Trump said on Saturday that if protesters who gathered the night before in Lafayette Square, across from the White House, had breached the fence, “they would have been greeted with the most vicious dogs, and most ominous weapons, I have ever seen.”

CHAOS IN ATLANTA

In Atlanta, Bernice King, the youngest daughter of slain civil rights icon Martin Luther King Jr., urged people to go home on Friday night after more than 1,000 protesters marched to the state capitol and blocked traffic on an interstate highway.

The demonstration turned violent at points. Fires burned near the CNN Center, the network’s headquarters, and windows were smashed at its lobby. Several vehicles were torched, including at least one police car.

Rapper Killer Mike, in an impassioned speech flanked by the city’s mayor and police chief, also implored angry residents to stay indoors and to mobilize to win at the ballot box.

“But it is not time to burn down your own home.”

Floyd, a Houston native who had worked security for nightclubs, was arrested on suspicion of trying to pass counterfeit money at a store to buy cigarettes on Monday evening. Police said he was unarmed. An employee who called for help had told a police dispatcher that the suspect appeared to be intoxicated.

In a striking coincidence, Floyd and Chauvin had both worked security at the same Latin nightclub in Minneapolis, though it was unlikely they ever interacted, former owner Maya Santamaria, who sold the El Nuevo Rodeo club in January, told Reuters.

Santamaria said Floyd worked inside the club on certain nights, supporting other staff with security. She said Chauvin, who worked outside the club as an off-duty cop for 16 years, had a reputation for roughing up customers, but she considered him responsible and a friend.

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News Network
January 6,2020

Sydney, Jan 6: Reserve troops fanned out across fire-ravaged regions in three Australian states on Monday after a horror weekend, as the government pledged $1.4 billion over two years to help recover from the devastating months-long crisis.

Catastrophic bushfires have turned swathes of land into smouldering, blackened hellscapes and destroyed an area about the size of the island of Ireland, according to official figures, with authorities warning the disaster still has weeks or months to run.

Prime Minister Scott Morrison, whose government has been criticised for its slow response to the emergency, pledged Australian $2 billion ($1.4 billion) of taxpayer money for a national recovery fund.

"It's a long road ahead and we will be with these communities every step of the way as they rebuild," Morrison said.

Firefighters joined by fresh teams from the US and Canada were taking advantage of rainy and cooler conditions to tackle out-of-control blazes ahead of rising temperatures forecast later this week.

In the biggest-ever call up of reserves, military teams were deployed across eastern Australia to help emergency services assess the damage, restore power and deliver supplies of food, water and fuel to cut-off communities.

For the first time in Australian history the government also deployed its medical assistance team, normally sent to other nations to lend support in the aftermath of their disasters to help evacuees.

"There is no room for complacency, especially as we have over 130 fires burning across (New South Wales) state still," Premier of New South Wales state Gladys Berejiklian said on Monday.

New normal

Almost five million hectares (50,000 square kilometres) have been razed across New South Wales and more than 1.2 million hectares in Victoria since late September, officials said.

That took the total amount of land burnt close to eight million hectares, around the size of the island of Ireland or South Carolina.

Twenty-four people have lost their lives so far, with over 1,800 homes damaged.

Two people are missing in New South Wales, the nation's most populous state.

In Victoria, Premier Daniel Andrews established a bushfire recovery agency to help devastated towns. It will be a permanent body, he said, as intense fires will become commonplace.

"We should just be honest about the fact that we're going to see more and more fires, more and more damage as each fire season comes... this is the new normal," Andrews told reporters.

The chair of the newly established Victoria state's bushfire appeal fund, Pat McNamara, added that this year's summer bushfire season was a "creeping disaster".

"We're still not even into what we would regard as the peak of the fire season," McNamara told national broadcaster ABC.

In the usually picturesque southeastern town of Eden, Holly Spence said she spent more than 12 hours defending her family's farm on Saturday, less than a week after saving it on New Year's Eve.

"We don't want to go through this for a third time," the 28-year-old told AFP.

Fiona Kennelly, 50, who evacuated with 24 members of her extended family to a motel outside Eden, said she was relieved the easing conditions allowed them to get some respite from the crisis.

"It's good to see daylight at the right time again," she told AFP, adding that the skies had been turning pitch-black in the afternoons.

Public anger

The impact of the bushfires has spread beyond affected communities, with heavy smoke engulfing the country's second-largest city Melbourne and the national capital Canberra.

Some government departments were shut in Canberra as the city's air quality was once-again ranked the world's poorest, according to independent online air-quality index monitor Air Visual.

The disaster has sparked growing public anger with Morrison. Rallies are planned on Friday to call on his government to step up efforts to tackle climate change, which experts say have helped fuel the fires.

In Los Angeles, Hollywood superstar Russell Crowe said he was back home fighting the fires and that the disaster was "climate change-based".

"We need to act on science, move our global workforce to renewable energy and respect our planet for the unique and amazing place it is. That way, we all have a future," he said in a message read out by Jennifer Aniston.

Australian actress Cate Blanchett praised the volunteer firefighters battling the blazes, adding: "When one country faces a climate disaster, we all face a climate disaster. We're in it together."

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Agencies
June 24,2020

Seoul, Jun 24: North Korea on Wednesday said leader Kim Jong Un suspended a planned military retaliation against South Korea, possibly slowing the pressure campaign it has waged against its rival amid stalled nuclear negotiations with the Trump administration.

Last week, the North had declared relations with the South as fully ruptured, destroyed an inter-Korean liaison office in its territory and threatened unspecified military action to censure Seoul for a lack of progress in bilateral cooperation and for activists floating anti-Pyongyang leaflets across the border.

Analysts say North Korea, after weeks deliberately raising tensions, may be pulling away just enough to make room for South Korean concessions.

Pyongyang's official Korean Central News Agency said Kim presided by video conference over a meeting Tuesday of the ruling Workers' Party's Central Military Commission, which decided to postpone plans for military action against the South brought up by the North's military leaders.

KCNA didn't specify why the decision was made. It said other discussions included bolstering the country's "war deterrent".

Yoh Sang-key, spokesman of South Korea's Unification Ministry, said Seoul was "closely reviewing" the North's report but didn't further elaborate.

Yoh also said it was the first report in state media of Kim holding a video conferencing meeting, but he didn't provide a specific answer when asked whether that would have something to do with the coronavirus.

The North says there hasn't been a single COVID-19 case on its territory, but the claim is questioned by outside experts.

Kim Dong-yub, an analyst from Seoul's Institute for Far Eastern Studies, said it's likely that the North is waiting for further action from the South to salvage ties from what it sees as a position of strength, rather than softening its stance on its rival.

"What's clear is that the North said (the military action) was postponed, not cancelled," said Kim, a former South Korean military official who participated in inter-Korean military negotiations.

Other experts say the North would be seeking something major from the South, possibly a commitment to resume operations at a shuttered joint factory park in Kaesong, which was where the liaison office was located, or restart South Korean tours to the North's Diamond Mountain resort.

Those steps are prohibited by the international sanctions against the North over its nuclear weapons programme.

The public face of the North's recent bashing of the South has been Kim Yo Jong, the powerful sister of leader Kim Jong Un, who has been confirmed as his top official on inter-Korean affairs.

Issuing harsh statements through state media, she had said the North's demolishing of the liaison office would be just the first in a series of retaliatory action against the enemy South and that she would leave it to the North's military to come up with the next steps.

The General Staff of the North's military has said it would send troops to the mothballed inter-Korean cooperation sites in Kaesong and Diamond Mountain and restart military drills in frontline areas.

Such steps would nullify a set of deals the Koreas reached during a flurry of diplomacy in 2018 that prohibited them from taking hostile action against each other.

Also condemning the South over North Korean refugees floating anti-Pyongyang leaflets across the border, the North said Monday it printed 12 million of its own propaganda leaflets to be dropped over the South in what would be its largest ever anti-Seoul leafleting campaign.

It wasn't immediately clear whether Kim's decision to hold back military action would affect the country's plans for leafleting. The North's military had said it would open border areas on land and sea and provide protection for civilians involved in the leafleting campaigns.

The North has a history of dialling up pressure against the South when it fails to get what it wants from the United States. The North's recent steps came after months of frustration over Seoul's unwillingness to defy US-led sanctions and restart the inter-Korean economic projects that would breathe life into its broken economy.

Nuclear negotiations between Pyongyang and Washington largely stalled after Kim's second summit with President Donald Trump last year in Vietnam, where the Americans rejected North Korea's demands for major sanctions relief in exchange for a partial surrender of its nuclear capabilities.

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