New research presented at the Annual Meeting of The European Association for the Study of Diabetes (EASD), Hamburg (2–6 Oct), suggests that exposure to low doses of radiation may contribute to an increased risk of diabetes.
Oct 2, 2023
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(PhysOrg.com) -- Astronauts anticipate more trips to the moon and manned missions to Mars. But exposure to cosmic radiation outside the Earth’s magnetic field could be detrimental to their arteries, according to a study ...
Apr 7, 2011
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There is bad news for those planning to go to Mars in the near future: a study in mice has suggested that radiation in space could cause cognitive decline in astronauts. However, we know from past research that mental, social ...
May 4, 2015
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Cosmic rays are energetic particles originating from outer space that impinge on Earth's atmosphere. Almost 90% of all the incoming cosmic ray particles are protons, almost 10% are helium nuclei (alpha particles), and slightly under 1% are heavier elements and electrons (beta minus particles). The term ray is a misnomer, as cosmic particles arrive individually, not in the form of a ray or beam of particles.
The variety of particle energies reflects the wide variety of sources. The origins of these particles range from energetic processes on the Sun all the way to as yet unknown events in the farthest reaches of the visible universe. Cosmic rays can have energies of over 1020 eV, far higher than the 1012 to 1013 eV that man-made particle accelerators can produce. (See Ultra-high-energy cosmic rays for a description of the detection of a single particle with an energy of about 50 J, the same as a well-hit tennis ball at 42 m/s [about 94 mph].) There has been interest in investigating cosmic rays of even greater energies.
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