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Canadian experiment to track space radiation and its risks

21.12.2012, Science Daily

Space can be a potentially hazardous environment to live and work in, especially when it comes to radiation. Originating from violent storms on the Sun and galactic cosmic rays produced in distant supernovae explosions, this natural radiation can pose a serious health risk for astronauts on long-duration space missions like those on the International Space Station (ISS). To prepare for future missions that may last for months or years, the Canadian Space Agency (CSA), along with other space agencies around the world, have been stepping up research into radiation biology in recent years, recognizing that it deserves the highest priority.


Clays on Mars: More plentiful than expected

20.12.2012, Science Daily

A new study indicates that clay minerals, rocks that usually form when water is present for long periods of time, cover a larger portion of Mars than previously thought.


Rocket burn sets stage for dynamic moon duos' lunar impact

16.12.2012, Science Daily

The lunar twins of NASA's Gravity Recovery and Interior Laboratory (GRAIL) mission have each completed a rocket burn that has sealed their fate. The burns modified the orbit of the formation-flying spacecraft. Over the next three days, this new orbit will carry the twins lower and lower over the moon's surface. On Monday afternoon, Dec. 17, at about 2:28 p.m. PST (5:28 p.m. EST), their moon-skimming will conclude when a portion of the lunar surface -- an unnamed mountain near the natural satellite's north pole -- rises higher than their orbital altitude.


Extending Einstein's ideas: New kind of quantum entanglement demonstrated

15.12.2012, Science Daily

Physicists have published new research which builds on the original ideas of Einstein and adds a new ingredient: a third entangled particle.


Passing the alcohol test: Fundamental properties of molecules have not changed during the past seven billion years

14.12.2012, Science Daily

The mass ratio of protons and electrons is deemed to be a universal constant. And rightly so, as the latest radio-astronomy observations of a distant galaxy have shown. Scientists used the 100-metre radio telescope in Effelsberg to measure absorption lines of the methanol molecule at a number of characteristic frequencies. The researchers analysed the spectrum of the simplest of all the alcohols in a very distant galaxy. The result: to a high degree of accuracy molecules and molecular matter have the same properties today as they did seven billion years ago. According to this finding, the mass ratio of protons and electrons in particular has changed by less than one hundred thousandth of a percent in this period.