Trump signs off on plan to launch nuclear spacecraft
Trump signs off on plan to launch nuclear spacecraft, New York Post, By Marisa Schultz, August 20, 2019, WASHINGTON — President Trump on Tuesday signed a presidential memorandum outlining new procedures to launch nuclear power systems into outer space.
Trump directed the Department of Transportation to issue public guidelines within a year for commercial companies seeking a license to launch spacecraft with nuclear systems. …..
The federal government and private companies have been eyeing nuclear-powered space exploration and nuclear reactors to fuel missions to the moon, Mars and beyond.
Nuclear propulsion could cut the nine-month trip to Mars in half, the Houston Chronicle reported Tuesday, after the sixth meeting of the National Space Council. Vice President Mike Pence attended the Virginia meeting and touted accomplishments of Trump’s renewed focus on space exploration.
“Our moon-to-Mars mission is on track, and America is leading in human space exploration again,” Pence said. https://nypost.com/2019/08/20/trump-signs-off-on-plan-to-launch-nuclear-spacecraft/
Distinguished scientist Martin Rees – world must fight climate change, don’t waste tax-payers’ money on space travel
The astronomer royal and risk specialist on cyber-attacks, pandemics, Brexit and life on Mars, Martin Rees is a cosmologist and astrophysicist who has been the astronomer royal since 1995. He is also a co-founder of the Centre for the Study of Existential Risk, Cambridge. His most recent book, On the Future: Prospects for Humanity, is published by Princeton.
Martin Rees Politicians don’t prioritise things when the benefits are diffuse and in the far future. They will only take action if the voters are behind them. That’s why it’s very important to sustain these campaigns.
We want to make sure that these issues of climate stay on the agenda. For instance, the 2015 papal encyclical on climate change. The pope has a billion followers from Latin America, Africa, East Asia and this helped towards consensus at the Paris conference……
The need for sending people into space has evaporated. If you were building the Hubble telescope now, you wouldn’t send people to refurbish it, you would send robots. I hope human space flight will continue, but as a high-risk adventure bankrolled by private companies. If I were American, I wouldn’t support taxpayers’ money going on Nasa’s manned programme. …..
it is a delusion to think we can solve Earth’s problems by relocating to Mars. I completely disagree with Musk and with my late colleague Stephen Hawking on that, because dealing with climate change on Earth is a doddle compared with terraforming Mars. ….https://www.theguardian.com/science/2019/aug/18/martin-rees-astronomer-royal-interview-brexit
Grand space travel plans – to rescue USA’s collapsing nuclear industry?
US plans to send nuclear reactors to space, Rt.com 19 Aug, 2019 Despite the nuclear industry stumbling in the domestic United States, the country is looking to put nuclear reactors on Mars and the Moon.
While the nuclear energy industry is struggling to stay afloat in the United States, bogged down by public and political mistrust, crushing nuclear waste-maintenance costs, and a market flooded by cheap natural gas, the country has grand plans for nuclear power outside of its domestic borders. Way outside.
In just a few short years from now, the United States will be shipping nuclear reactors to the moon and Mars. According to team members from the Kilopower project, a collaborative venture from NASA and the United States Department of Energy, nuclear energy is just a few years from heading into the space age.
“The Kilopower project is a near-term technology effort to develop preliminary concepts and technologies that could be used for an affordable fission nuclear power system to enable long-duration stays on planetary surfaces,” says NASA’s “Space Technology Mission Directorate.” In layman’s terms, the focus of the Kilopower project is to use an experimental fission reactor to power crewed outposts on the moon and Mars, allowing researchers and scientists to stay and work for much longer durations of time than is currently possible. …..
[ NASA says] The potential of this demonstration would be to “pave the way for future Kilopower systems that power human outposts on the Moon and Mars, enabling mission operations in harsh environments and missions that rely on In-situ Resource Utilization to produce local propellants and other materials.”
While this is not the first time that nuclear energy is being used to power pursuits into the final frontier, the Kilopower project is a much more ambitious and powerful project than any of its predecessors. According to Space.com, “nuclear energy has been powering spacecraft for decades. NASA’s Voyager 1 and Voyager 2 probes, New Horizons spacecraft, and Curiosity Mars rover, along with many other robotic explorers, employ radioisotope thermoelectric generators (RTGs), which convert the heat thrown off by the radioactive decay of plutonium-238 into electricity.” ….. https://www.rt.com/business/466790-us-space-nuclear-reactors/
Harm to astronauts’ brains from space radiation
Space Radiation Will Damage Mars Astronauts’ Brains, Space.com By 9 Aug 19, Space radiation will take a toll on astronauts’ brains during the long journey to Mars, a new study suggests.
Major problem for astronauts – radiation damages mood and memory?
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Long-Term Radiation Exposure From Space Travel Harms Memory, Mood, D-brief,
Researchers also know that short, powerful doses of radiation are deadly. But less is known about long-term, low-dose radiation — the kind that settlers on Mars or the moon would face. Now, a team of scientists led by Charles Limoli at the University of California, Irvine, has taken a step toward a better understanding of those long-term risks. The researchers exposed mice to chronic, low-dose radiation for six months. The results are troubling for the future of spaceflight. The radiation left the mice suffering from both memory and mood problems that the scientists say would likely show up in human subjects as well. The results were published Monday in the journal eNeuro. Radiation on the BrainIn the study, the mice showed “severe impairments in learning and memory,” according to the research paper. The mice were also generally more stressed out by their environments. That isn’t a good sign for space settlers, who will need their wits to face unforeseen struggles. Other studies have also already shown the potential ill effects of the long-term isolation and stress. In the past, scientists hit lab mice with radiation levels some 100,000 times higher than they’d actually experience on Mars’ surface. But the researchers say their test is the first that has used these lower, more realistic doses of radiation over long periods to study space travel. Their efforts were made possible by a new facility. The radiation included both neutrons – heavy particles from atomic nuclei – and pure energy in the form of gamma rays and other scattered photons…… Researchers found both physical and chemical changes in the brains they examined, in addition to the behavioral changes they observed in the living mice…….. more tests need to be done, and the radiation, while more realistic than past experiments, still doesn’t exactly mimic the space environment. But if their results hold up, they’re not a good sign for the future of human space settlement, at least not without a lot of bulky and expensive radiation shielding. http://blogs.discovermagazine.com/d-brief/2019/08/05/long-term-radiation-exposure-from-space-travel-harms-memory-mood/#.XUionm8zbIU |
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Jolly propaganda about plutonium fuelling spacecraft
I do love the way that they trivialise the danger and massive tax-payer expense involved in the production and use of plutonium, for Mars travel etc.
NASA’s Mars 2020 rover is fueling up for the Red Planet. NASA’s next spacecraft on Mars is getting a nuclear battery to do science on the Red Planet.
The Mars 2020 rover will soon be fueled using a multi-mission radioisotope thermoelectric generator, which is essentially a battery to keep it warm and productive on its mission in search of signs of habitability on Mars.
Mars 2020 isn’t alone in using nuclear power, as a host of other NASA spacecraft — 27 in all — have also used nuclear power. Some examples include the Voyager missions in interstellar space, the New Horizons mission that went past Pluto, and Curiosity — Mars 2020’s predecessor rover on the Red Planet.
Production of plutonium-238 — a radioactive isotope of plutonium that will fuel the Mars 2020 rover — was stopped for awhile in the U.S. in the late 1980s, then restarted in 2011 in a joint effort between NASA and the Department of Energy. The isotope is the main source of energy for spacecraft that cannot rely on solar power, usually because the craft is too far from the sun, or on a world where the sunlight is too weak to generate enough power.
A 2017 report from the Government Accountability Office said that there was enough plutonium-238 in stockpiles at that time for space missions planned through the 2020s. There were, however, long-term issues with plutonium-238 production, including reactor availability, technical matters with chemical processing, and workforce hiring and training. In 2018, citing progress with stockpile management, NASA said plutonium would be available for its next Discovery-class mission, which will announce Step 1 selections in 2020 and the final selections in 2021…….. https://www.space.com/mars-2020-rover-nuclear-battery-fueled-up.html
America’s original moon plan was to explode a nuclear bomb on the moon
Landing on the Moon was option B.
Option A was to detonate a nuke on it.
In the late 1950s, Washington set in place a secret operation to examine the feasibility of detonating a thermonuclear device on the surface of our closest celestial neighbour.
It was codenamed Project A119.
Had it gone ahead, the expression “shooting for the Moon” would have gained a whole new meaning.
A spectacular scheme born of desperationWhat might now seem unimaginable only makes sense in the context of the Cold War, historian Vince Houghton says……..
The West was given a shock with the launch of Sputnik and very quickly the US Government flew into action and said we need to do something very spectacular,” Dr Houghton says.
“We need to do something so big that the whole world will know that this was just an anomaly, that Sputnik was just a blip, that the United States was still the big kid on the block.”
And with that, Project A119 was born.
One hell of a mushroom
The idea behind the project was ambitious, but simple — to create an explosion and lunar mushroom cloud so awe-inspiring and unavoidable that no matter where you lived on planet Earth, it would be impossible to ignore the extent of America’s military and technological might.
Appointed to lead the project was a physicist named Leonard Reiffel, who later went on to become the deputy director of the Apollo Program at NASA.
Dr Houghton says when delivering the initial findings in June 1959, cost was among the major reasons why the project was scuttled.
But he says there were also concerns about damaging the lunar landscape.
“There were some scientists who said: ‘You know, we might want to walk up there some day. Maybe we don’t want to blow the hell out of it before we do,'” he says.
“But, again, Sputnik was so terrifying that a lot of people were willing to take that chance.
“A lot of people were willing to say: ‘You know what? The Moon’s big enough that we can nuke it and land on it at the same time, so let’s give this a shot.'”
The big bang that fizzed
Dr Reiffel’s secret report into the feasibility of a lunar detonation was eventually declassified in 2000.
It carried a rather innocuous title: A Study of Lunar Research Flights.
It suggested that detonating a nuclear device on the Moon was technically feasible, but it gave no substantive detail as to how it might be done.
The project never proceeded to operational phase.
Interviewed by The Guardian shortly after the report’s declassification, Dr Reiffel expressed his personal relief.
“I am horrified that such a gesture to sway public opinion was ever considered,” he said.
“Had the project been made public there would have been an outcry.
“I made it clear at the time there would be a huge cost to science of destroying a pristine lunar environment, but the US Air Force were mainly concerned about how the nuclear explosion would play on Earth.”
Dr Houghton says it’s important to view Project A119 in its historical context.
He details the operation in a new book called Nuking the Moon, which examines a whole slate of radical intelligence projects that were set in motion during WWII and the Cold War, but which were never carried out……… https://www.abc.net.au/news/2019-07-17/moon-us-plans-cold-war-russia-sputnik/11220340
Future space travellers will be, in reality, radiation guinea pigs
Space radiation hasn’t contributed to astronaut mortality — yet, study shows
An analysis of all living and dead astronauts and cosmonauts shows that radiation hasn’t contributed meaningfully to their mortality rates. Astronomy, By Korey Haynes , July 5, 2019 “ ………… they found no trend in the deaths suggesting any common cause, meaning radiation didn’t play a major role in the health outcomes of the astronauts and cosmonauts they studied.
Of course, this doesn’t mean humans are in the clear.
“We would expect that at some level of dose there should be adverse health effects,” Reynolds says. “We keep getting the answer ‘no.’ This doesn’t mean radiation isn’t harmful or greater doses wouldn’t be. But so far the doses have been low enough that we don’t see anything.”
That’s probably because the vast majority of space farers so far have spent most or all of their time in Earth orbit, where Earth’s magnetic fields still protect them from the majority of harmful space radiation. Only those 24 astronauts who ventured to the Moon went beyond Earth’s radiation protection, and they stayed for just a few days.
Reynolds says that it’s difficult to draw meaningful results from that tiny sub-sample of people.
By contrast, a Mars mission might last multiple years, and would take place almost entirely beyond Earth’s shielding.
Other researchers are looking at alternative ways of testing the dangers of radiation exposure. But it’s possible that the next round of human space explorers will be guinea pigs, much like the first generation, and only time will tell how radiation has affected them.http://www.astronomy.com/news/2019/07/space-radiation-hasnt-contributed-to-astronaut-mortality–yet-study-shows
A heightened solar cycle, by chance, reduced the exposure of Apollo astronauts to space radiation
The term “radiation” is used to describe energy that is emitted in the form of electromagnetic waves and/or particles. Humans can perceive some forms of electromagnetic radiation: visible light can be seen and infrared radiation (heat) can be felt.
Meanwhile, other varieties of radiation such as radio waves, X-rays and gamma rays are not visible and require special equipment to be observed. Worryingly, when high energy (ionising) radiation encounters matter, it can cause changes at the atomic level, including in our bodies.
There are a several sources of ionising radiation in space. The sun continuously pours out electromagnetic radiation across all wavelengths – especially as visible, infrared and ultraviolet radiation. Occasionally, enormous explosions on the solar surface known as solar flares release massive amounts of X-rays and gamma rays into space, as well as energetic electrons and protons (which make up the atomic nucleus along with neutrons). These events can pose a hazard to astronauts and their equipment even at distances as far from the sun as Earth, the moon and Mars.
Potentially dangerous radiation in space also originates from outside our solar system. Galactic cosmic rays are high energy, electrically charged atomic fragments that travel at nearly the speed of light and arrive from all directions in space.
On Earth, we are protected from most of this ionising radiation. The Earth’s strong magnetic field forms the magnetosphere, a protective bubble that diverts most dangerous radiation away, while the Earth’s thick atmosphere absorbs the rest.
But above the atmosphere, the magnetosphere traps energetic subatomic particles in two radiation regions. These “Van Allen belts” comprise an inner and outer torus of electrically charged particles.
Lucky escape
So how did NASA solve the problem of crossing the Van Allen belts? The short answer is they didn’t. To get to the moon, a spacecraft needs to be travelling quickly to climb far enough away from the Earth such that it can be captured by the moon’s gravity. The trans-lunar orbit that the Apollo spacecraft followed from the Earth to the moon took them through the inner and outer belts in just a few hours.
Although the aluminium skin of the Apollo spacecraft needed to be thin to be lightweight, it would have offered some protection. Models of the radiation belts developed in the run-up to the Apollo flights indicated that the passage through the radiation belts would not pose a significant threat to astronaut health. And, sure enough, documents from the period show that monitoring badges worn by the crews and analysed after the missions indicated that the astronauts typically received doses roughly less than that received during a standard CT scan of your chest.
But that is not the end of the story. To get to the moon and safely back home, the Apollo astronauts not only had to cross the Van Allen belts, but also the quarter of a million miles between the Earth and the moon – a flight that typically took around three days each way.
They also needed to operate safely while in orbit around the moon and on the lunar surface. During the Apollo missions, the spacecraft were outside the Earth’s protective magnetosphere for most of their flight. As such, they and their crews were vulnerable to unpredictable solar flares and events and the steady flux of galactic cosmic rays.
The crewed Apollo flights actually coincided with the height of a solar cycle, the periodic waxing and waning of activity that occurs every 11 years. Given that solar flares and solar energetic particle events are more common during times of heightened solar activity, this might seem like a cavalier approach to astronaut safety.
There is no doubt that the political imperative in the 1960s to put US astronauts on the moon “in this decade” was the primary driving factor in the mission timing, but there are counterintuitive benefits to spaceflight during solar activity maxima. The increased strength of the sun’s magnetic field that permeates the solar system acts like an umbrella – shielding the Earth, moon and planets from galactic cosmic rays and therefore lessening the impact on astronaut radiation doses. https://theconversation.com/space-radiation-the-apollo-crews-were-extremely-lucky-120339
Mars and travel to Mars – will kill astronauts with ionising radiation
EUROPEAN SPACE AGENCY: RADIATION WILL MAKE MARS MISSION DEADLY, https://futurism.com/the-byte/space-radiation-mars-mission-deadly JUNE 5TH 19__DAN ROBITZSKI__
Slow Down
Elon Musk once said he’d likely move to Mars in his lifetime. But before we settle the Red Planet, the European Space Agency (ESA) urges extreme caution.
That’s because it lacks the natural barriers that protect us Earthlings from cosmic radiation, which would put astronauts at risk of deadly health conditions. But they’re working on it — the ESA says it has partneredwith particle accelerators to recreate cosmic radiation in a controlled setting and build shields that can protect future explorers.
Harsh Conditions
“The real problem is the large uncertainty surrounding the risks,” said ESA physicist Marco Durante in the press release. “We don’t understand space radiation very well and the long-lasting effects are unknown.”
Shields Up
The ESA found that a six-month stay on Mars would expose astronauts to “60% of the total radiation dose limit recommended for their entire career.”
As it stands today, we can’t go to Mars due to radiation,” said Durante. “It would be impossible to meet acceptable dose limits.”
READ MORE: Radiation Makes Human Missions to Mars Too Dangerous: ESA [ExtremeTech]
Ionising radiation in space will kill astronauts headed for Mars
The radiation showstopper for Mars exploration https://phys.org/news/2019-06-showstopper-mars-exploration.html, by European Space Agency 3 June 19, An astronaut on a mission to Mars could receive radiation doses up to 700 times higher than on our planet—a major showstopper for the safe exploration of our solar system. A team of European experts is working with ESA to protect the health of future crews on their way to the Moon and beyond.
Earth’s magnetic fieldand atmosphere protect us from the constant bombardment of galactic cosmic rays—energetic particles that travel at close to the speed of light and penetrate the human body.
Cosmic radiation could increase cancer risks during long duration missions. Damage to the human body extends to the brain, heart and the central nervous system and sets the stage for degenerative diseases. A higher percentage of early-onset cataracts have been reported in astronauts.
“One day in space is equivalent to the radiation received on Earth for a whole year,” explains physicist Marco Durante, who studies cosmic radiation on Earth.
Marco points out that most of the changes in the astronauts’ gene expression are believed to be a result of radiation exposure, according to the recent NASA’s Twins study. This research showed DNA damage in astronaut Scott Kelly compared to his identical twin and fellow astronaut Mark Kelly, who remained on Earth.
A second source of space radiation comes from unpredictable solar particle events that deliver high doses of radiation in a short period of time, leading to “radiation sickness” unless protective measures are taken.
Europe’s radiation fight club
“The real problem is the large uncertainty surrounding the risks. We don’t understand space radiation very well and the long-lasting effects are unknown,” explains Marco who is also part of an ESA team formed to investigate radiation.
Since 2015, this forum of experts provides advice from areas such as space science, biology, epidemiology, medicine and physics to improve protection from space radiation.
“Space radiation research is an area that crosses the entire life and physical sciences area with important applications on Earth. Research in this area will remain of high priority for ESA,” says Jennifer Ngo-Anh, ESA’s team leader human research, biology and physical sciences.
While astronauts are not considered radiation workers in all countries, they are exposed to 200 times more radiation on the International Space Station than an airline pilot or a radiology nurse.
Radiation is in the Space Station’s spotlight every day. A console at NASA’s mission control in Houston, Texas, is constantly showing space weather information.
f a burst of space radiation is detected, teams on Earth can abort a spacewalk, instruct astronauts to move to more shielded areas and even change the altitude of the station to minimize impact.
One of the main recommendations of the topical team is to develop a risk model with the radiation dose limits for crews traveling beyond the International Space Station.
ESA’s flight surgeon and radiologist Ulrich Straube believes that the model should “provide information on the risks that could cause cancer and non-cancer health issues for astronauts going to the Moon and Mars in agreement with all space agencies.”
Recent data from ExoMars Trace Gas Orbiter showed that on a six-month journey to the Red Planet an astronaut could be exposed to at least 60% of the total radiation dose limit recommended for their entire career.
“As it stands today, we can’t go to Mars due to radiation. It would be impossible to meet acceptable dose limits,” reminds Marco.
Measure to protect
ESA has teamed up with five particle accelerators in Europe that can recreate cosmic radiation by “shooting” atomic particles to speeds approaching the speed of light. Researchers have been bombarding biological cells and materials with radiation to understand how to best protect astronauts.
“The research is paying off. Lithium is standing out as a promising material for shielding in planetary missions,” says Marco.
ESA has been measuring the radiation dose on the International Space Station for seven years with passive radiation detectors in the DOSIS 3-D experiment. ESA astronauts Andreas Mogensen and Thomas Pesquet wore a new mobile dosimeter during their missions that gave them a real-time snapshot of their exposure.
The same European team behind this research will provide radiation detectors to monitor the skin and organ doses of the two phantoms traveling to the Moon onboard NASA’s Orion spacecraft.
$125 million to NASA to develop nuclear rockets
NASA JUST GOT $125 MILLION TO DEVELOP NUCLEAR ROCKETS, https://futurism.com/the-byte/nasa-develop-nuclear-rockets DAN ROBITZSKI_ 29 May 19, For the first time since the 1970s, NASA is developing nuclear propulsion systems for its spacecraft.NASA didn’t request any money for a nuclear propulsion program, but it will get $125 million for the research as part of the space agency’s $22.3 billion budget that Congress approved last week, Space.comreports. If the program succeeds, nuclear propulsion could significantly cut down on travel time during missions to Mars and beyond.
Test Launch
Republican leadership sees nuclear propulsion as an important step along the way to deep space missions and the 2024 Moon landing with which Congress has tasked NASA, per Space.com. Alabama Representative Robert Aderholt described nuclear propulsion as “critical” for the 2024 launch in a budget meeting last week.
“As we continue to push farther into our solar system, we’ll need innovative new propulsion systems to get us there, including nuclear power,” Vice President Mike Pence told the National Space Council in March.
Sorting It Out
But before NASA can embrace nuclear-powered technology, there’s the matter of navigating regulations that govern the use of nuclear energy.
For the time being, the space agency hasn’t announced any plans to use nuclear propulsion for any of its planned missions, according to Space.com, but that may change as the technology develops.
Funds being cut from US Air Force nuclear, space programs
US Air Force nuclear, space programs take hit in border wall reprogramming, Defense News, WASHINGTON — In the wake of the Pentagon reprogramming $1.5 billion in fiscal 2019 funds to support President Donald Trump’s border wall with Mexico, only the U.S. Air Force appears to be losing money appropriated for equipment updates.
Russia considering making spaceplane powered by a nuclear reactor
‘Reshaping space market’: Russia mulls building rocket plane with nuclear engine Rt.com : 6 Mar, 2019 Russian space agency Roscosmos is considering building a spaceplane powered by a nuclear reactor, according to a memo obtained by a Russian news agency. The move could “reshape” the market for space launches, the document says.
A rocket plane is an aircraft powered by rocket engines. Conventional jets proved better for atmosphere-only flight, but this type of vehicle found its niche application as a reusable spacecraft – most notably as the Space Shuttle program.
Several rocket planes are still operational today, like the SpaceShipTwo, which is meant for suborbital tourist flights. Roscosmos believes such an aircraft may be viable for space missions if equipped with a nuclear power plant, says a memo reviewed by RIA Novosti.
The memo says Russia’s experience with creating the Buran spaceplane and similar space systems would come in handy for designing such a craft in the future.
Nuclear power is tricky to use in space, let alone harnessing it to provide propulsion. The USSR experimented with placing small nuclear reactors on its satellites for endurance, but the incident with the Kosmos 954 sat, which malfunctioned and fell in Canada in 1977, showed that potential problems probably outweigh the benefits. Improvements in solar panels made them the to-go power source in space applications while chemical and compressed gas thrusters are used for propulsion.
The picture may be different for long-range space missions, in which a reliable power source, capable of providing propulsion for months rather than minutes would be a huge advantage. Russia is currently working on a project dubbed TEM, a nuclear-powered rocket powered by a megawatt-class nuclear reactor…….. https://www.rt.com/russia/453132-rocket-plane-nuclear-power/
Space travel? The human body is not compatible with ionising radiation
From Radiation to Isolation: 5 Big Risks for Mars Astronauts (Videos)
Even astronauts who live on the International Space Station, which sits inside Earth’s protective magnetic field, are exposed to 10 times the radiation they would if they were back on Earth, NASA officials said in a statement and series of videos from the agency’s Human Research Program.
Anyone who traveled through deep space would be at much greater risk from radiation exposure. Outside of Earth’s protective shield, radiation can increase cancer risk and damage a person’s central nervous system (which would cause altered cognitive function, reduced motor function and behavioral changes), NASA’s Human Research Program said. Other dangers of being exposed to such high radiation include nausea, vomiting, anorexia, fatigue, cataracts, cardiac disease and circulatory disease. …….https://www.space.com/42918-big-space-risks-mars-astronauts-videos.html
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of the week– Nuclear Reactor Information Task Force
14 May – online event From Bombs to Data Centres: the Face of Nuclear Colonialism
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