News tagged with cosmic ray

100 years of cosmic rays mystery

As physicists gather in early August to celebrate a century since the initial discovery of cosmic rays, Alan Watson, emeritus professor of physics at the University of Leeds, explains how physicists have gradually revealed ...

Aug 01, 2012
4.8 / 5 (4) 0

Red Crucifix sighting in 774 may have been supernova

(Phys.org) -- A supernova may have actually been the mysterious "Red Crucifix" in the sky that is cited in the Anglo Saxon Chronicle for the year 774. New correspondence between a university student and Nature carries intere ...

Jun 30, 2012 weblog
4.6 / 5 (12) 10 | with audio podcast

Voyager 1 at the final frontier

For nearly 35 years, NASA’s Voyager 1 probe has been hurtling toward the edge of the solar system, flying through the dark void on a mission unlike anything attempted before. One day, mission controllers ...

Jun 22, 2012
5 / 5 (27) 3 | with audio podcast

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