News tagged with cosmic ray
Did exploding stars help life on Earth to thrive?
(Phys.org) -- Research by a Danish physicist suggests that the explosion of massive stars – supernovae – near the Solar System has strongly influenced the development of life. Prof. Henrik Svensmark ...
Apr 24, 2012 |
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‘Seeing’ cosmic rays in space
Astronauts have long reported the experience of seeing flashes while they are in space, even when their eyes are closed. Neil Armstrong and Buzz Aldrin both reported these flashes during the Apollo 11 mission, ...
Space & Earth / Space Exploration
Apr 20, 2012 |
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Neutrinos put cosmic ray theory on ice
(Phys.org) -- A telescope buried beneath the South Pole has failed to find any neutrinos accompanying exploding fireballs in space, undermining a leading theory of how cosmic rays are born.
Apr 20, 2012 |
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Where do the highest-energy cosmic rays come from? Not from gamma-ray bursts, says IceCube study
The IceCube neutrino telescope encompasses a cubic kilometer of clear Antarctic ice under the South Pole, a volume seeded with an array of 5,160 sensitive digital optical modules (DOMs) that precisely track ...
Apr 18, 2012 |
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Cosmic rays alter chemistry of lunar ice
Space scientists from the University of New Hampshire and multi-institutional colleagues report they have quantified levels of radiation on the moon's surface from galactic cosmic ray (GCR) bombardment that ...
Space & Earth / Space Exploration
Mar 19, 2012 |
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Sun delivered curveball of powerful radiation at Earth
A potent follow-up solar flare, which occurred Friday (Jan. 17, 2012), just days after the Sun launched the biggest coronal mass ejection (CME) seen in nearly a decade, delivered a powerful radiation punch ...
Space & Earth / Space Exploration
Feb 01, 2012 |
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Can solar flares hurt astronauts?
Solar flares, coronal mass ejections, high-energy photons, cosmic rays… space is full of various forms of radiation that a human wouldn’t want to be exposed to for very long. Energized particles ...
Space & Earth / Space Exploration
Jan 24, 2012 |
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Twin probes to circle moon to study gravity field
The moon has come a long way since Galileo first peered at it through a telescope. Unmanned probes have circled around it and landed on its surface. Twelve American astronauts have walked on it. And lunar ...
Space & Earth / Space Exploration
Dec 26, 2011 |
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New evidence for complex molecules on Pluto's surface
(PhysOrg.com) -- The new and highly sensitive Cosmic Origins Spectrograph aboard the Hubble Space Telescope has discovered a strong ultraviolet-wavelength absorber on Pluto's surface, providing new evidence ...
Space & Earth / Space Exploration
Dec 20, 2011 |
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A new kind of metal in the deep Earth
(PhysOrg.com) -- The crushing pressures and intense temperatures in Earth's deep interior squeeze atoms and electrons so closely together that they interact very differently. With depth materials change. New ...
Dec 19, 2011 |
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Preparing for future human exploration, RAD measures radiation on journey to Mars
The Radiation Assessment Detector, the first instrument on NASA's next rover mission to Mars to begin science operations, was powered up and began collecting data Dec. 6, almost two weeks ahead of schedule. ...
Space & Earth / Space Exploration
Dec 13, 2011 |
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Still in the dark about dark matter
Dark matter, the mysterious stuff thought to make up about 80 percent of matter in the universe, has become even more inscrutable.
Dec 06, 2011 |
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In the heart of Cygnus, NASA's Fermi reveals a cosmic-ray cocoon
(PhysOrg.com) -- The constellation Cygnus, now visible in the western sky as twilight deepens after sunset, hosts one of our galaxy's richest-known stellar construction zones. Astronomers viewing the region ...
Nov 28, 2011 |
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Cosmic particle accelerators get things going
(PhysOrg.com) -- ESA's Cluster satellites have discovered that cosmic particle accelerators are more efficient than previously thought. The discovery has revealed the initial stages of acceleration for the ...
Nov 17, 2011 |
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Researchers take first steps toward X-ray superfluorescence
(PhysOrg.com) -- While physicist Robert Dicke is probably most famous for his work on the cosmic microwave background (CMB) – and being "scooped" while attempting to be the first to detect it – he ...
Nov 14, 2011 |
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