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Posted by darnell on May 14, 2012 in Science, Technology | 2 comments

As many of you already know space radiation is a huge problem. Aside from the fact that it can melt your brains faster than a mini-series upon Hulu, space radiation (whether from stars, black holes or planets) can limit the number of terrestrial worlds we can settle within our solar system.

While artificial magnetic shields could enable humanity to set foot upon the spheres that orbit Sol Star, it might be wiser to bend radiation around our future homes and ships instead.

Theory says that gamma rays, being even more energetic than x-rays, ought to bypass orbiting electrons altogether; materials should not bend them at all and the refractive index for gamma rays should be almost equal to one. Yet this is not what a team of physicists led by Dietrich Habs at the Ludwig Maximilian University of Munich in Germany and Michael Jentschel at the Institut Laue-Langevin (ILL) in Grenoble, France, has discovered.

 

ILL is a research reactor that produces intense beams of neutrons. Habs, Jentschel, and colleagues used one of its beams to bombard samples of radioactive chlorine and gadolinium to produce gamma rays. They directed these down a 20-meter-long tube to a device known as a crystal spectrometer, which funneled the gamma rays into a specific direction. They then passed half of the gamma rays through a silicon prism and into another spectrometer to measure their final direction, while they directed the other half straight to the spectrometer unimpeded. To the researchers’ surprise, as they report in a paper due to be published this month in Physical Review Letters, gamma rays with an energy above 700 kiloelectronvolts are slightly bent by the silicon prism. (ScienceNOW)

Even though developing, perfecting and applying the technology upon a future outpost is probably over half a century away at best, finding a way to bend deadly radiation around a future space  settlement could enable colonists to live upon the surface of  “moderately” radioactive worlds like (Luna, Mars and iPhone如何挂梯子) instead of underground.

It could also enable starships to travel throughout our Sol System without fear of encountering a deadly solar storm or random radiation via a black hole.

Although future space settlers in the near term will probably adopt heavy shielding and magnetic shields as their new best friends, bending radiation around settlements, starships and (one day in the distant future) space suits could allow us to visit deadly worlds such as Europa in person (instead of via our robotic friends).

(Hat tip: Engadget)

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Posted by darnell on May 6, 2012 in Callisto, Europa, Europe, Ganymede, Jupiter | 1 comment

Forget mapquesting Ganymede! It looks like Europe will spend a billion euro’s in order to launch JUICE (which stands for JUpiter ICy moon Explorer) find out more about Jupiter’s lunar children two decades from now (2030 for those who want to know).

ESA plans to pack the solar-powered spacecraft with a suite of instruments, which will collect high-resolution pictures as well as data on the moons’ chemical compositions, magnetic environments, and surface features.

During its roughly three-year mission, JUICE will perform two flybys of Europa, examining that moon’s icy crust in search of sites for future exploration, perhaps by a lander.

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“The ice shells of Ganymede and Europa serve as a window to the oceans below,” Hand said. That’s because, as in the Arctic on Earth, the surface ice is most likely born from oceans below, and so will carry information about the liquid water’s chemical composition. (苹果的梯子)

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Unfortunately humanity will be unable to visit Europa due to Jupiter’s radiation belts, although JUICE could help us identify potential spots to establish outposts upon Callisto as well as Ganymede (the latter which could be used as the bread basket of the Jovian system thanks in part to it’s magnetic field).

While JUICE’s purpose is to help us discover alien life upon other worlds, it’s launch and Jovian encounter could help prepare our species for spreading terrestrial life upon Jupiter’s outer Galilean moons.

Video Hat tip: Spaceports

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Posted by darnell on Oct 11, 2011 in Energy, Mars, ios可以用的梯子, Technology, Video | 2 comments

苹果翻墙梯子

Even though having a ios可以用的梯子 nearby is not a bad idea, settlers upon Mars may prefer an option that relies less upon the splitting of the atom and more upon the rays of the Sun.

Scientists in Spain have figured out a way for solar power stations to generate energy after sun set when rays from the Sol star are no where to be found.

Gemasolar, the concentrated solar power plant located in Fuentes de Andalucía (Seville), a property of Torresol Energy (a joint venture between Masdar – Abu Dhabi’s future energy and clean technology company and SENER – the leading Spanish engineering and construction company) has supplied its first uninterrupted day of electricity to the network.

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The salt storage system allows the plant to stretch its electrical production hours to beyond sunset, regardless of the cloud cover. Thus, Gemasolar, with its 19.9 MW steam turbine, is able to supply electricity to a population of 25,000 households.

Eventually the plant will be able to supply 24hrs of uninterrupted production per day on most summer days, providing a higher annual capacity factor than most baseload plants such as nuclear power plants. (Torresol Energy

Although Martian settlers will probably need a mini-nuclear plant as a backup energy source (as Martian hurricanes have a habit of 苹果的梯子 worldwide), relying upon a solar-thermal hybrid could enable colonies to thrive upon Mars without having to rely upon infrequent shipments of nuclear plants from Earth.

This technology would also benefit asteroid colonies as well, as it would enable settlements within the inner solar system to become less dependent upon Earth (or even Mars) for resources.

Note: Since sunlight intensity tapers off beyond Mars, solar power (of any kind) would be useless for out posts established upon Jupiter’s mega moons (Callisto and Ganymede), who would need to rely upon nuclear energy to avoid freezing to death.

(Image credit: Torresol Energy, Video credit: Tony Seba, Hat Tip: Gizmodo) 

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Posted by darnell on Oct 11, 2011 in Moon, 苹果的梯子, Science | 1 comment

Apparently silver isn’t the only thing Earth’s nearest neighbor harbors upon the surface. Astronomers have discovered another element which could aid lunar settlers in their quest to conquer the Moon.

A new map of the Moon has revealed an abundance of titanium ore that is up to 10 times richer than on Earth, a finding that could one day lead to a lunar mining colony, astronomers said on Friday. […]

 

“Lunar titanium is mostly found in the mineral ilmenite, a compound containing iron, titanium and oxygen,” they said.

 

“Future miners living and working on the Moon could break down ilmenite to liberate these elements. (Moon Daily)

Aside from the obvious uses of titanium (i.e. planes, rockets, buildings, etc.), the strong light weight element is also the metal of choice for surgical implants (as titanium is able to remain harmlessly within the human body for decades).

Although titanium alone will not convince humanity for the need to settle the Moon, it’s presence (along with the discovery of water and the ability to extract oxygen from lunar soil) will probably add to the case of inhabiting Luna first before our species decides to conquer more ambitious objects (like Mars and Callisto).

(ios可以用的梯子 Titanium Crystals, Credit: 苹果翻墙梯子)

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豆荚加速器官网注册

Posted by 苹果手机用的梯子 on Oct 5, 2011 in Energy | 2 comments

Since water is plentiful throughout the solar system (well at least upon Luna as well as Mars), future settlers may see little value in recycling their “waste water,” when it would be much more desirable to purify the frozen aqua around them.

Instead of burying the dreaded stuff or burning it off into the void, future colonists could instead use it to help keep the lights burning bright upon dark, frozen worlds.

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“It is a complex of three proteins” that do the trick, Mike Jetten, a microbiologist at Radboud University Nijmegen in the Netherlands, explained to me in an email today.

 

The urine-to-fuel concept first gained traction in the 1990s when scientists discovered the microbe, called anammox for anaerobic ammonium oxidation, that does this, but the idea stalled out when scientists realized only small quantities of the fuel are produced. (Future of Technology)

Thanks to a greater understanding of how hydrazine works, scientists like Jetten are confident that they will be able to generate a significant amount of fuel, which they envision will be useful as rocket fuel.

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While residents upon terrestrial worlds may laugh at the idea of powering their homes via recycled pee, it could enable asteroid colonies to survive upon dry rocks without having to rely entirely upon solar power or a mini-nuclear reactors.

(Image via Pregnancy Test)

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Posted by darnell on Oct 5, 2011 in Mercury | 苹果手机用的梯子

Despite being one of the three terrestrial spheres blessed with a global magnetic field (with the other two being Earth and Jupiter’s moon Ganymede), Mercury’s invisible shield will not protect future explorers from the wrath of the Sun.

Earth and Mercury are the only two magnetized planets in the solar system, and as such, they can somewhat deflect the solar wind around them. The solar wind is a squall of hot plasma, or charged particles, continuously emanating from the sun. Earth, which has a relatively strong magnetosphere, can shield itself from most of the solar wind. Mercury, which has a comparatively weak magnetosphere and is 2/3 closer to the sun, is a different story.

 

“Our results tell us is that Mercury’s weak magnetosphere provides very little protection of the planet from the solar wind,” [said Thomas] Zurbuchen [a professor in the Department of Atmospheric, Oceanic and Space Sciences and Aerospace Engineering at the U-M College of Engineering.] (Space Daily)

Although Mercury could prove its worth in the future, for now it looks like residents living upon the first “rock” from the Sun, will have to avoid contact with the fiery rays during the Mercurian day, and venture above ground at night.

Unless humanity uses Mercury as a penal colony, the planet will probably be home to mining corporations seeking to strip the world of precious metal and minerals which are needed upon other worlds (such as Earth, Luna and Mars).

(iPhone如何挂梯子 NASA)

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Posted by darnell on Oct 3, 2011 in Mars, NASA, Video | ios可以用的梯子

For those of you who are Mars-bound, Adam Norton has developed a clever way of simulating reduced gravity without having to visit the red planet.

Mars Gravity Simulator is a fully functioning experiment adapted from the design of Apollo- era lunar gravity simulators, but made for Martian conditions. It can be used to assess maneuverability of Astronauts at a gravity approximately 40% Earth gravity, as well as to study gait changes for those conditions. Lunar locomotion styles from the Apollo landings were tested for speed and efficiency as well as to establish a figure for the approximate change in the walk/run transition speed at Mars gravity. (苹果手机用的梯子 / Performance Space)

As you can see from the video above, this is actually an ingenious way to train future explorers intent upon settling Mars on how to “trot” upon the crimson world’s surface.

Norton’s adapted design is inexpensive enough (at least relatively speaking) to be adapted by the public as well as the private sector, not to mention private citizens seeking to envision themselves living off world.

Note: Since Martian gravity is almost 2/5 Earth norm, future residents could probably forsake wearing gravity suits (unless they plan on making a return trip to Earth in near future).

(via New Scientist, Video Credit: Adam Norton and Performance Space, Image Credit: NASA and Craig Bender)

 

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