spacetoday.net: space news from around the webin association with SpaceNews

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
Curiosity detects methane "spikes" in Martian atmosphere
Posted: Wed, Dec 17 7:41 AM ET (1241 GMT)

Proton launches Russian communications satellite
Posted: Tue, Dec 16 6:59 AM ET (1159 GMT)

NASA receives $18 billion in 2015 spending bill
Posted: Tue, Dec 16 6:47 AM ET (1147 GMT)

news links
Wednesday, December 17
Private Moon racers to get extra year to finish
Engineering and Technology Magazine — 7:12 am ET (1212 GMT)
Google Lunar XPrize Deadline Extended To 2016
IEEE Spectrum — 7:11 am ET (1211 GMT)
Pittsburgh team gets XPrize awards, but contest's future in doubt
Pittsburgh Tribune-Review — 7:09 am ET (1209 GMT)
Astrobotic and CMU land $750,000 in race to moon
Pittsburgh Post-Gazette — 7:09 am ET (1209 GMT)


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