spacetoday.net: space news from around the web

ExoLance
Cosmic rays linked to supernovae
Posted: Tue, Feb 19, 2013, 6:12 AM ET (1112 GMT)
Supernova cosmic ray illustration (SLAC) Astronomers have found evidence suggesting that high-energy cosmic rays are produced in the shock fronts of supernova explosions. Observations by ground and space-based telescopes of supernovae indicated that their expanding shock waves can accelerate protons to close to the speed of light; most cosmic rays are such high-speed protons. Gamma-ray observations confirmed this origin by detecting gamma rays at the energies expected when an accelerated proton collides with a stationary one. Astronomers had previously speculated that supernovae were the source of cosmic rays, but lacked proof before these observations.
<<previous article   next article>>
news in brief
China launches experimental satellite
Posted: Tue, Sep 30 7:46 AM ET (1146 GMT)

news links
Thursday, October 2
Spurned by NASA, Sierra Nevada Teams With Stratolaunch
Popular Mechanics — 6:54 am ET (1054 GMT)
Delta IV for Orion test rolls out to pad after rain delays
My News 13 Orlando — 6:54 am ET (1054 GMT)
Sierra Nevada working on Dream Chaser that won't need ULA rockets
Denver Business Journal — 6:53 am ET (1053 GMT)
A Learning Experience: Silver Linings for GNSS?
Inside GNSS — 6:53 am ET (1053 GMT)


about spacetoday.net   ·   info@spacetoday.net   ·   mailing list