NASA proposes 'Ice Home' design for future Mars explorers

December 30, 2016

Washington, Dec 30: The first explorers on Mars may build their homes using the ice beneath their feet to effectively protect them from the harsh martian environment and provide a safe place to call home, NASA scientists say.

iceWhen astronauts set foot on Mars, they may stay for months rather than days as they did during Apollo missions to the Moon.

The surface of Mars has extreme temperatures and the atmosphere does not provide adequate protection from high-energy radiation, NASA said.

These explorers will need shelters to effectively protect them from the harsh Martian environment and provide a safe place to call home.

According to researchers at NASA's Langley Research Centre in Virginia, the best building material for a new home on Mars may lie in an unexpected material: ice.

"Mars Ice Dome," is one of many potential concepts for sustainable habitation on the red planet in support of the agency's journey to Mars, NASA researchers said.

"After a day dedicated to identifying needs, goals and constraints we rapidly assessed many crazy, out of the box ideas and finally converged on the current Ice Home design, which provides a sound engineering solution," said Kevin Vipavetz, Langley senior systems engineer.

The "Mars Ice Home" is a large inflatable torus, a shape similar to an inner tube, that is surrounded by a shell of water ice.

The Mars Ice Home design has several advantages that make it an appealing concept, according to NASA. It is lightweight and can be transported and deployed with simple robotics, then filled with water before the crew arrives.

It incorporates materials extracted from Mars and because water in the Ice Home could potentially be converted to rocket fuel for the Mars Ascent Vehicle, the structure itself doubles as a storage tank that can be refilled for the next crew.

Another critical benefit is that water, a hydrogen-rich material, is an excellent shielding material for galactic cosmic rays – and many areas of Mars have abundant water ice just below the surface.

Galactic cosmic rays are one of the biggest risks of long stays on Mars. This high-energy radiation can pass right through the skin, damaging cells or DNA along the way that can mean an increased risk for cancer later in life or, at its worst, acute radiation sickness.

Space radiation is also a significant challenge for those designing potential Mars outposts. For example, one approach would envision habitats buried underneath the Martian surface to provide radiation shielding.

However, burying the habitats before the crews arrive would require heavy robotic equipment that would need to be transported from Earth.

Comments

Demetrio Rothe…
 - 
Wednesday, 8 Feb 2017

Hello, 
I am writing from Space Exploration Architecture '?we are the team who designed Mars Ice House, the winner of NASA's Centennial Challenge for a 3D-Printed Habitat on Mars.

I noticed you posted a great article earlier this month about our project, Mars Ice Home. Could you please credit our project in your article by including a reference back to our website?
Here is the link: http://www.spacexarch.com/mars-ice-home/

Kind Regards,
Demetrio Rothenhausler

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News Network
March 28,2020

Washington, Mar 28: The world is in the face of a devastating impact due to the coronavirus pandemic and has clearly entered a recession, the International Monetary Fund said on Friday, but projected a recovery next year.

"We have reassessed the prospects for growth for 2020 and 2021. It is now clear that we have entered a recession as bad or worse than in 2009. We do project recovery in 2021," IMF Managing Director Kristalina Georgieva told reporters at a news conference.

Georgieva was addressing the press after a meeting of governing body of the IMF, the International Monetary and Financial Committee. Representing 189 members, the body met virtually to discuss the unprecedented challenge posed to the world by COVID-19.

The key to recovery in 2021, she said, is only if the international community succeeds in containing the virus everywhere and prevent liquidity problems from becoming a solvency issue.

"The US is in recession, as is the rest of the advanced economies of the world. And in a big chunk of developed and emerging markets in developing economies. How severe? We are working now on our projections for 2020, Georgieva said in response to a question.

The new projections are expected in the next few weeks.

Stressing that while containment is the main reason for the economy to stand still and get into a recession, she said containment is very necessary to come out of this period and step in to recovery. "Until the virus is not contained, it would be very difficult to go to the lives we love."

"A key concern about a long-lasting impact of the sudden stop of the world economy is the risk of a wave of bankruptcies and layoffs that not only can undermine the recovery. But can erode the fabric of our societies," the IMF chief said.

To avoid this from happening, many countries have taken far-reaching measures to address the health crisis and to cushion its impact on the economy, both on the monetary and on the fiscal side, she said.

The IMF chief said 81 emergency financing requests, including 50 from lower-income countries, have been received. She said current estimate for the overall financial needs of emerging markets is 2.5 trillion dollars.

"We believe this is on the lower end. We do know that their own reserves and domestic resources will not be sufficient," she added.

The G-20, a day earlier, reported fiscal measures totalling some 5 trillion dollars or over 6 per cent of the global GDP.

Responding to another question, Georgieva said the IMF is projecting recession for 2020.

"We do expect it to be quite deep and we are very much urging countries to step up containment measures aggressively so we can shorten the duration of this period of time when the economy is in standstill," she said.

"And also to apply well-targeted measures, primarily focusing on the health system to absorb that enormous stress that comes from coronavirus. And on people, businesses and the financial system, I am very pleased to say that when we went through countries' responses, that sense of targeted fiscal measures is there and are also very impressive to see the size of these measures," she added.

"Countries are doing all they can on the fiscal and on the monetary front. We have heard from our members' very impressive decisions taken over the last days," the IMF chief said.

"We also want to caution that as we are responding now, we want to make the recession as possibly short and not too deep. We also want to think about what is going to follow the recovery and make sure that we are putting forward measures that can be supportive in this regard," she said.

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Agencies
March 15,2020

Houston, Mar 15: Researchers, studying the novel coronavirus, have found that the time between cases in a chain of transmission is less than a week, and over 10 per cent of patients are infected by someone who has the virus, but does not show symptoms yet, a finding that may help public health officials contain the pandemic.

The study, published in the journal Emerging Infectious Diseases, estimated what's called the serial interval of the coronavirus by measuring the time it takes for symptoms to appear in two people with the virus -- the person who infects another, and the infected second person.

According to the researchers, including those from the University of Texas at Austin, the average serial interval for the novel coronavirus in China was approximately four days.

They said the speed of an epidemic depends on two things -- how many people each case infects, and how long it takes cases to spread.

The first quantity, the scientists said, is called the reproduction number, and the second is the serial interval.

Due to the short serial interval of the disease caused by the coronavirus -- COVID-19 -- they said, emerging outbreaks will grow quickly, and could be difficult to stop.

“Ebola, with a serial interval of several weeks, is much easier to contain than influenza, with a serial interval of only a few days,” said Lauren Ancel Meyers, study co-author from UT Austin.

Meyers explained that public health responders to Ebola outbreaks have much more time to identify and isolate cases before they infect others.

“The data suggest that this coronavirus may spread like the flu. That means we need to move quickly and aggressively to curb the emerging threat,” Meyers added.

In the study, the scientists examined more than 450 infection case reports from 93 cities in China, and found the strongest evidence yet that people without symptoms must be transmitting the virus -- known as pre-symptomatic transmission.

More than one in ten infections were from people who had the virus but did not yet feel sick, the scientists said.

While researchers across the globe had some uncertainty until now about asymptomatic transmission with the coronavirus, the new evidence could provide guidance to public health officials on how to contain the spread of the disease.

“This provides evidence that extensive control measures including isolation, quarantine, school closures, travel restrictions and cancellation of mass gatherings may be warranted,” Meyers said.

The researchers cautioned that asymptomatic transmission makes containment more difficult.

With hundreds of new cases emerging around the world every day, the scientists said, the data may offer a different picture over time.

They said infection case reports are based on people's memories of where they went and whom they had contact with, and if health officials move quickly to isolate patients, that may also skew the data.

“Our findings are corroborated by instances of silent transmission and rising case counts in hundreds of cities worldwide. This tells us that COVID-19 outbreaks can be elusive and require extreme measures,” Meyers said.

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Agencies
March 6,2020

Up to 2,241 new cases of COVID-19 have been reported across the globe as of Thursday, bringing the total count to 95,333, according to the latest official data by the World Health Organization (WHO).

Five countries, territories and areas reported COVID-19 cases for the first time in the past 24 hours, the Xinhua news agency reported.

WHO Director-General Tedros Adhanom Ghebreyesus emphasised the importance of implementing a comprehensive approach to mitigate the impact of the virus in a briefing on Wednesday.

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