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
4.3 / 5 (6) 20 | with audio podcast

‘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, ...

Apr 20, 2012
5 / 5 (5) 3 | with audio podcast

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
4.5 / 5 (4) 11 | with audio podcast

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 ...

Mar 19, 2012
4.9 / 5 (8) 1 | with audio podcast

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 ...

Jan 24, 2012
4.7 / 5 (3) 0

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
4.7 / 5 (26) 16 | with audio podcast

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
5 / 5 (4) 0 | with audio podcast