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

London: Italy on Friday recorded the most daily deaths of any country since the start of the coronavirus pandemic and Spain had its deadliest day, as British Prime Minister Boris Johnson became the first major world leader to test positive.

Italy reported 969 new deaths, Spain 769 and France 299 as Europe reeled from a crisis that has put millions at risk around the world and threatened a global economic meltdown.

In other grim milestones, AFP tallies showed a total of 300,000 cases now recorded in Europe with more than 26,000 deaths worldwide, and the United States overtook China as the country with the most infections.

Italy showed infection rates continuing a downward trend and Spain said its rate of new infections appeared to be slowing, but other countries were bracing to feel the full impact of the virus's spread.

The World Health Organization's regional director for Africa warned the continent faced a "dramatic evolution" of the pandemic, as South Africa became the latest nation to start life under lockdown and reported its first COVID-19 deaths.

Johnson, whose country has seen more than 14,000 declared coronavirus cases and 759 deaths, said he had developed mild symptoms over the previous 24 hours and was self-isolating after testing positive.

Britain's Health Secretary Matt Hancock also tested positive with mild symptoms.

Europe has suffered the brunt of the coronavirus crisis in recent weeks, with millions across the continent on lockdown and the streets of Paris, Rome and Madrid eerily empty.

In France — where nearly 2,000 people have died -- the government announced it was extending its stay-at-home order until at least April 15. While severe, the 299 new deaths it recorded on Friday was lower than the 365 reported the previous day.

The death of a 16-year-old girl from the virus has particularly shaken France, and shattered the belief of many young people that they are immune.

The girl's mother Sabine told AFP that Julie "just had a cough" at first but deteriorated quickly. She died on Wednesday, less than a week after showing her first symptoms.

"It's unbearable," Sabine said. "We were supposed to have a normal life."

Focus was also turning to the United States, where the number of known infections jumped by 18,000 on Friday, reaching more than 97,000 -- higher than both China and Italy. The US also recorded 345 deaths over the past 24 hours, with a total toll of 1,478.

In New York City, health workers are battling a surging toll of dead and infected at the US epicentre of the crisis, including an increasing number of younger patients.

"Now it's 50-year-olds, 40-year-olds, 30-year-olds," said one respiratory therapist at the Jewish Medical Center in Queens.

They "didn't listen about not going out or protecting themselves and washing their hands", he said.

- 'Afraid and lost' -

The coronavirus first emerged in China late last year before spreading globally, with more than half a million declared cases in 183 countries and territories.

Over the last six days, as many new cases have been diagnosed around the world as in the previous 80 days.

Beijing managed to contain its spread with lockdowns and quarantines and its epicentre Wuhan is in the process of easing severe movement restrictions in place for two months.

Three billion people around the world have been told to stay indoors.

In a historic first, Pope Francis performed the rarely recited "Urbi et Orbi" blessing to an empty Saint Peter's Square.

"Thick darkness has gathered over our squares, our streets and our cities; it has taken over our lives, filling everything with a deafening silence and a distressing void, that stops everything as it passes by," he said.

"We find ourselves afraid and lost," he said, describing the coronavirus as a "tempest".

Health care systems even in the most developed nations are stretched to breaking point and medical workers have been having to make difficult choices.

"If I've got five patients and only one bed, I have to choose who gets it," Sara Chinchilla, a paediatrician at a hospital near Madrid, told AFP.

The WHO's chief Tedros Adhanom Ghebreyesus said the dire lack of protective gear for frontline health workers was one of the most pressing problems in the fight to prevent deaths.

"The chronic global shortage of personal protective equipment is now one of the most urgent threats to our collective ability to save lives," he told a virtual news conference in Geneva.

Lockdowns and other measures are wreaking havoc on the global economy, with fears of a downturn worse than the Great Depression of the 1930s.

"It is clear that we have entered a recession" that will be worse than in 2009 following the global financial crisis, International Monetary Fund chief Kristalina Georgieva said Friday.

Unprecedented stimulus measures have helped markets bounce back after a brutal month, but people around the world are bracing for economic hardship.

The United States reported that 3.3 million people applied for unemployment benefits last week -- by far the highest number ever recorded.

Retail workers in particular have suffered as many countries shutter non-essential business, while airlines and the global tourism industry have been dealt devastating blows.

The fashion industry was the latest hit on Friday, with Paris men's fashion week and haute couture shows cancelled along with Milan men's fashion week.

- Armies of volunteers -

The World Tourism Organization said Friday it expected tourist arrivals to fall by 20-30 percent this year, with losses of $300 billion-450 billion in international tourism receipts.

But there have been rays of hope in the midst of the crisis.

Armed groups in Cameroon, the Philippines and Yemen have moved in recent days to reduce violence after UN Secretary General Antonio Guterres issued an appeal for ceasefires.

And armies of volunteers have emerged in many countries to bring help to the needy, with food deliveries for the elderly, free taxi rides, accommodation for health workers, and even home-sewn face masks.

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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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Agencies
April 17,2020

Beijing/Wuhan, Apr 17: China's coronavirus death toll mounted to 4,632 on Friday as the country revised figures in its epicentre Wuhan with 1,290 additional fatalities amid international criticism of under-reporting of COVID-19 data.

The Wuhan municipal headquarters on Friday revised the number of confirmed COVID-19 cases and deaths due to the disease, state-run Xinhua news agency reported.

As of April 16, the total number of confirmed coronavirus cases in Wuhan was increased by 325 to 50,333 and the number of fatalities up by 1,290 to 3,869.

The revised figure raised China's overall COVID-19 death toll to 4,632. The total number of cases also increased to 82,692.

The Wuhan municipal headquarters in a notification said the revisions were made in accordance with related laws and regulations as well as the principle of being responsible for history, the people and the deceased.

The revision of figures came amid sharp criticism of China by the US and other nations for its alleged under-reporting of the coronavirus cases and cover-up of the origin of the viral strain, which emerged in Wuhan in December last, reportedly from the local Hunan sea food market.

Explaining the reason for the figure revision, the Wuhan municipality said it was done to ensure that the information on the city's COVID-19 epidemic is open and transparent, and that the data are accurate.

Listing the reasons for the data discrepancies, it said the surging number of patients at the early stage of the epidemic overwhelmed medical resources and the admission capacity of medical institutions. Some patients died at home without having been treated in hospitals.

Besides, during the height of their treating efforts, hospitals were operating beyond their capacities and medical staff were preoccupied with saving and treating patients, resulting in belated, missed and mistaken reporting.

Also, due to a rapid increase of designated hospitals for treating COVID-19 patients -- including those administered by ministries, Hubei Province, Wuhan city and its districts, those affiliated to companies, as well as private hospitals and makeshift hospitals -- a few medical institutions were not linked to the epidemic information network and failed to report their data in time.

The registered information of some of the deceased patients was incomplete, and there were repetitions and mistakes in the reporting, the Wuhan authorities noted.

Citing an official of the Wuhan municipal headquarters, Xinhua reported that a group for epidemic-related big data and epidemiological investigations was established in late March.

The group used information from online systems and collected full information from all epidemic-related locations to ensure that facts about every case are accurate and every figure is objective and correct.

"What lie behind the epidemic data are the lives and health of the general public, as well as the credibility of the government," the official was quoted by the report.

The timely revision of the figures, among other things, shows respect for every single life, the official said.

Meanwhile, the revised cases were not included in the overall national figures released by China's National Commission (NHC) in its daily report on Friday as it reports previous day's cases.

As per NHC data, as of Thursday the overall confirmed cases of coronavirus was 82,367, including 3,342 deaths.

As many as 1,081 patients are being treated and 77,944 people discharged after recovery, it said.

NHC said it received reports of 26 new confirmed COVID-19 cases from the mainland on Thursday, of which 15 were imported.

The other 11 new cases were domestically transmitted, it said, noting that five cases were reported in Guangdong Province, three in Heilongjiang Province, two in Shandong Province and one in Liaoning Province.

No death was reported on Thursday on the mainland.

As of Thursday, China has a total of 1,549 imported cases, NHC said, adding that 879 were undergoing treatment with 45 in severe condition. Besides, there were 66 new asymptomatic cases, taking the tally to 1,038.

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