A radiation sensor inside NASA’s Curiosity Mars rover shows that even under the best-case scenario and behind shielding currently being designed for NASA’s new deep-space capsule, future travelers will face a huge amount of radiation.
The results, based on Curiosity’s 253-day, 348-million-mile cruise to Mars, indicate an astronaut most likely would exceed the current U.S. lifetime radiation exposure limit during one round trip mission.
“Even for the shortest of missions we are perilously close to the radiation career and health limits that we’ve established for our astronauts,” NASA’s chief medical officer Richard Williams told a National Academy of Sciences’ medical committee on Thursday.
The Institute of Medicine panel is looking into ethics and health standards for long-duration spaceflights.
Curiosity, which landed inside a giant impact basin near the Martian equator on Aug. 5, 2012, continues to collect radiation data as it conducts its primary mission to look for habitats that could have supported ancient or possible present day microbial life.
Curiosity’s Radiation Assessment Detector, known as RAD, measures the amount and energy levels of highly energetic particles in galactic cosmic rays and from the sun. Scientists then converted the data into radiation dosage units known as sieverts, which are associated with increased cancer risk.
Current U.S. standards limit an astronaut’s lifetime radiation exposure to 1 Sievert, or 1,000 milliSieverts, which equates to about a five percent chance increase in developing a fatal cancer.
A new study shows that with currently available propulsion technologies and similar shielding to Curiosity’s, astronauts on even the shortest roundtrips to Mars would get radiation doses of about 662 millisieverts and that doesn’t include radiation dosages for any time spent on the Martian surface.
“We have a challenge,” Williams said during a webcast meeting on Thursday of the spaceflight health and medical ethics committee.
“We have the probability that in pursuing exploration-class missions beyond low-Earth orbit of long-duration that we will exceed the standards that we have already promulgated inside the agency. We need the advice of the committee on how best to go about proactively resolving some of these potential conflicts,” Williams said.
In general, Curiosity’s shielding was more effective against particles emitted during solar storms, known as coronal mass ejections, than galactic cosmic rays.
ABC Is Hiding Details of Killer Vester Flanagan's Manifesto ...(Must Be Littered With Liberal Propaganda) 2015-08-29 3:45
Killer Vester Flanagan was a big Obama supporter.
But, you’d never know it from the liberal media.
The media is hiding Flanagan’s political leanings from the American public.
ABC has yet to release Flanagan’s manifesto.
It must be littered with embarrassing liberal propaganda.
The Tatler reported, via Instapundit:
Two days ago, ABC News reported that Vester Flanagan, the murderer of two WDBJ employees, sent a 23-page ...
Austria, Libya count dead as number of migrants crossing Mediterranean soars 2015-08-29 1:37
Austria said on Friday 71 refugees including a baby girl were found dead in an abandoned freezer truck, while Libya recovered the bodies of 82 migrants washed ashore after their overcrowded boat sank on its way to Europe and scores more were feared dead.
The U.N. refugee agency said the number of refugees and migrants crossing the Mediterranean to reach Europe ...
Financial Times Calls For Abolishing Cash 2015-08-29 1:07
liminating physical currency necessary to give central banks more power
The Financial Times has published an anonymous article which calls for the abolition of cash in order to give central banks and governments more power.
Entitled The case for retiring another ‘barbarous relic’, the article laments the fact that people are stockpiling cash in anticipation of another economic collapse, a factor which ...
Serbian government bans anti-mass immigration protests, and plans ahead for mass immigration 2015-08-29 1:52
Nebojsa Stefanovic, Serbia’s Interior Minister said protesters who are concerned about “an EU plan” to settle thousands of illegal immigrants into the country, will not be allowed to voice their concerns in a protest march on Monday, 31st of August.
“We will not allow the expression of intolerance and hatred to be something that is characteristic of Serbia” said Stefanovic.
“The Ministry ...
Germany asks Facebook to remove 'racist' anti-migrant posts 2015-08-28 20:32 Heiko Maas, Germany's justice minister, says social network should remove xenophobic posts in the same way it deals with nudity
Germany is calling on Facebook to remove “xenophobic and racist” anti-migrant posts from its website and apps.
Heiko Maas, the German justice minister, has written to the company to demand an urgent review of its policy over hate messages.
“Photos of certain ...