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
February 10,2020

Hubei, Feb 10: The death toll in the deadly coronavirus outbreak in China and other parts of the world has reached 904, CNN reported citing Chinese authorities on Monday.

The number of infected people globally has now hit the 40,000 mark.

According to the country's health officials, the number of people, who died from coronavirus in the Hubei Province, has risen to 871.

"As of 24:00 on February 9, Hubei Province reported a total of 29,631 cases of new coronavirus pneumonia, including 16,902 cases in Wuhan. 22,160 patients are still being treated in hospitals. 73,127 people remain under medical observation," read the statement from the Chinese Regional Health Committee.

The novel coronavirus was first detected in China's Wuhan city in late December and has since spread to more than 25 countries.

On Sunday, the new coronavirus even surpassed the fatalities caused by the SARS epidemic in 2003.

The World Health Organisation (WHO) has declared a global health emergency in the wake of the outbreak.

Meanwhile, WHO's international expert mission led by Dr Bruce Aylward embarked for China.

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News Network
February 21,2020

Washington, Feb 21: US President Donald Trump has made yet another tall claim about the size of the crowd that will welcome him in Ahmedabad, saying Prime Minister Narendra Modi has told him that there will 10 million(1 crore) people to greet him on his arrival for his maiden visit to India.

President Trump and First Lady Melania are scheduled to travel to Ahmedabad, Agra and New Delhi on February 24 and 25.

Speaking to reporters at the Joint Base Andrews in Maryland on Tuesday, Trump said that Modi told him that "we'll have 7 million people between the airport and the event."

"So it's going to be very exciting. But he says between the stadium and the airport, we'll have about 7 million people. So it's going to be very exciting. I hope you all enjoy it," he said.

On Thursday, Trump upped the crowd size by three million at a 'Keep America Great' rally in Colorado.

"I hear, they are going to have 10 million people. They say anywhere from six to 10 million people are going to be showing up along the route to one of the largest stadiums in the world, the largest cricket stadium in the world, which is brand new and beautiful," said Trump, who is seeking reelection in the November presidential polls.

But according to a top civic official in Ahmedabad, the total population of the city is only around 70 lakh.

The authorities believe that between one to two lakh people are expected to line up along the 22-km route of the road show by Modi and Trump from the airport to the Motera cricket stadium, said to be the world's largest.

"We believe that around one to two lakh people will gather to welcome the dignitaries during the road show," Ahmedabad Municipal Commissioner Vijay Nehra said on Thursday, contradicting the claims made by the US President.

As per the road show route plan, Trump and Modi will first reach the Sabarmati Ashram, a place closely associated with Mahatma Gandhi, from Ahmedabad airport.

Addressing his supporters, Trump spoke about his India visit and said the "Namaste Trump" rally in Ahmedabad would spoil him.

"Prime Minister Modi said, we will have 10 million people greet you. Here's my problem. We have a packed house. We have a lot of people, thousands of people that couldn't get in. It's going to look like peanuts from now on," he said.

"I'll never be satisfied with the crowd. If we have 10 million people in India, how can I be satisfied when we fill up like a 60,000-seat stadium? I am getting spoiled," Trump said.

One of Trump's supporters from the audience then suggested that he build a bigger stadium.

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News Network
April 12,2020

Washington, Apr 12: The US has overtaken Italy as the country with the highest number of deaths due to COVID-19 pandemic with the fatalities crossing 20,000, according to Johns Hopkins University data, as the novel coronavirus continues to wreak havoc across the globe.

The deadly coronavirus, that originated in China in December last year, has so far killed more than one lakh people across the globe. The United States on Saturday became the country with the highest number of deaths at 20,597, surpassing Italy's 19,468 fatalities.

More than 5.3 lakh Americans have tested positive for coronavirus, which is about the same for the next four countries put together: Spain (163,027), Italy (152,271), Germany (125,452) and France (93,790). In terms of fatalities, the US and Italy are followed by Spain (16,606), France (13832) and United Kingdom (9,875), the varsity data showed.

New York City, the financial capital of the world, has emerged as the epicenter of coronavirus in the world. A city of 8.3 million, which is one of the most densely populated cities in the US, by Saturday night had as many as 8,627 deaths and more than 180,000 people had tested positive for COVID-19.

President Donald Trump has declared a national emergency and all the 50 States have been notified with major disaster declaration. More than 95 per cent of the country's 330 million population are under stay-at-home order. Trump has deployed more than 50,000 personnel from the armed forces in fight against COVID-19.

After an initial two-week social mitigation measures, that includes social distancing, the measures have been extended till April 30. Initially, members of the White House Task Force on Coronavirus had projected between one and two lakhs deaths. Now, they have dropped the projection to 60,000 deaths, mainly due to the successful implementation of these measures.

"The people of our country have gone through a lot. But we did it the right way. And we look like we'll be coming in on the very, very low side, really below the lowest, the lowest side of the curve of death," Trump told Fox News on Saturday night.

Trump asserted that situation was improving in places like New York, where there is a drop in new patients. Responding to a question, he said he wanted the country to open up as soon as possible.

However, he has not taken a decision so far, even as some media reports said that he the President was looking for early May.

"I think it's going to be the toughest decision that I've ever made. I really, hopefully that I ever will have to make. But it's certainly the toughest decision that I've ever made. I hope that I'm going to make the right decision," Trump said, adding that he will be making a decision reasonably soon.

"We're setting up a council now of some of the most distinguished leaders in virtually every field including politics and business and medical. We'll be making that decision fairly soon," Trump said.

Meanwhile, The New York Times reported that its investigations have revealed that the president was warned about a potential pandemic but that internal divisions, lack of planning and his faith in his own instincts led to a halting response.

According to The Washington Post, coronavirus is killing about one in 10 hospitalised middle-aged patients and four in 10 older than 85 in the United States. It is particularly lethal to men even when taking into account common chronic diseases that exacerbate risk.

Globally, the novel coronavirus has killed 108,862 people and infected over 1.7 million people globally. The US has the highest number of infections at 529,887, according to Johns Hopkins University data.

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