Latest Cosmic ray Stories

2009-10-03 11:13:58

Quite a few distant galaxies turn out to be cosmic delivery rooms. Large numbers of massive stars are born in the hearts of these starburst galaxies, and later explode as supernovae. In the remnants they leave behind, particles are accelerated to very high energies. Astrophysicists have now used the H.E.S.S. telescopes to make detailed measurements of the gamma rays from the NGC 253 galaxy. As predicted, these high-energy rays originate from the region of maximum supernova activity close to...

2009-09-25 09:40:00

A team of researchers from the University of Zaragoza (UNIZAR) and the Institut d'Astrophysique Spatiale (IAS, in France) has developed a "scintillating bolometer", a device that the scientists will use in efforts to detect the dark matter of the Universe, and which has been tested at the Canfranc Underground Laboratory in Huesca, Spain. "One of the biggest challenges in Physics today is to discover the true nature of dark matter, which cannot be directly observed "“ even though it...

2009-08-15 08:05:00

NASA's space shuttle program is winding down. With only about half a dozen more flights, shuttle crews will put the finishing touches on the International Space Station (ISS), bringing to an end twelve years of unprecedented orbital construction. The icon and workhorse of the American space program will have finished its Great Task. But, as Apple's CEO Steve Jobs might say, there is one more thing... An act of Congress in 2008 added another flight to the schedule near the end of the program....

2009-08-11 09:25:00

Astronomers recently observed a mysterious flux of particles in the universe, and the hope was born that this may be the first observation of the remnants of "dark matter". But scientists from the University of Gothenburg have shown that there is another explanation of the flux. Several independent studies recently discovered a mysterious flux of electrons and positrons in the universe. Several theories were presented that suggested that these particles arise from the decay of "dark matter" -...

2009-08-03 13:10:00

Four Miami-area high school students have an unusual summer job on their resumes: building a cosmic ray detector alongside nuclear physicists. The four participated in a six-week paid internship with Florida International University's physics department, selected from a pool of top student applicants, The Miami Herald reported Monday. It was a little overwhelming at first, Alyssa Indart, 17, told the Herald. But we learned not to be intimidated by anything -- not even particle physics. The...

2009-06-03 13:00:22

U.S. scientists are using high-energy particles from space in an attempt to solve one of nature's mysteries -- how thunderstorms create lightning. Florida Institute of Technology researchers Joseph Dwyer and Hamid Rassoul, with Martin Uman from the University of Florida, have developed a technique to remotely measure thunderstorm electrical fields on the ground. They said by measuring small radio pulses made by cosmic-rays passing through the storms, they might be able to reconstruct the...

2009-06-01 14:02:34

Trying to find how thunderstorms create lightning Florida Institute of Technology researchers are trying to solve one of the great mysteries in nature: how thunderstorms make lightning. Because, in principle, lightning is a big spark it should behave like other sparks"”like the ones created when we touch a door knob on a dry day. Scientists have accumulated evidence, however, that lightning sometimes behaves in very un-spark-like ways. Lightning can start in regions of thunderstorms...

2009-04-23 09:45:00

Researchers at North Carolina State University have used a mathematical model that allows them to get a clearer picture of the galaxy's youngest supernova remnant by correcting for the distortions caused by cosmic dust. Their new data provides evidence that this remnant is from a type Ia supernova - the explosion of a white dwarf star - and raises questions about the ways in which magnetic fields affect the generation of the remnant's cosmic ray particles. NC State physicists Dr. Stephen...

2009-01-27 09:06:44

British scientists say they've detected cosmic rays reaching an underground detector that reflect major weather events occurring in the Earth's stratosphere. The researchers said the cosmic-rays detected half a mile underground in a unused U.S. iron mine can be used to determine major weather events occurring 20 miles above the Earth. The researchers from the United Kingdom's National Center for Atmospheric Science and the Science and Technology Facilities Council said the study shows how the...

2009-01-21 11:00:00

Cosmic-rays detected half a mile underground in a disused U.S. iron-mine can be used to detect major weather events occurring 20 miles up in the Earth's upper atmosphere, a new study has revealed. Published in the journal Geophysical Research Letters and led by scientists from the UK's National Centre for Atmospheric Science (NCAS) and the Science and Technology Facilities Council (STFC), this remarkable study shows how the number of high-energy cosmic-rays reaching a detector deep...

Latest Cosmic ray Reference Libraries

2009-05-14 17:51:56

The IceCube Neutrino Observatory is a neutrino telescope that is currently being built at the Amundsen-Scott South Pole Station. IceCube is being constructed in deep Antarctic ice by deploying thousands of PMTs (photomultiplier tubes) at depths of 4750 to 8000 feet. These spherical optical sensors are deployed on strings of sixty modules each, into holes melted by hot water drilling. Since 2005, 59 strings have been deployed and installation is expected to be complete by 2011. The strings are...

2004-10-19 04:45:43

Gamma-Ray Astronomy -- Gamma-ray astronomy is the astronomical study of gamma rays. Long before experiments could detect gamma rays emitted by cosmic sources, scientists had known that the universe should be producing these photons. Work by Feenberg and Primakoff in 1948, Hayakawa and Hutchinson in 1952, and, especially, Morrison in 1958 had led scientists to believe that a number of different processes which were occurring in the universe would result in gamma-ray emission. These...

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Word of the Day
  • Nautical, the visiting and carousing of sailors in the Greenland ships.
This word is apparently from a confusion of two similar Dutch words: 'mallemerok,' a foolish woman, and 'mallemok,' a name for some persons among the crew of a whaling vessel.