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


Cosmic rays linked to supernovae
Posted: Tue, Feb 19, 2013, 7:12 AM ET (1212 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
Russia launches classified satellite
Posted: Sun, Jun 25 9:02 AM ET (1302 GMT)

SpaceX Falcon 9 launches BulgariaSat-1
Posted: Sun, Jun 25 9:01 AM ET (1301 GMT)

PSLV launches 31 satellites
Posted: Sun, Jun 25 8:59 AM ET (1259 GMT)

news links
Wednesday, June 28
What just happened between Jeff Bezos' Blue Origin and Alabama?
Huntsville Times — 6:10 am ET (1010 GMT)
NASA Doesn't Benefit From Your Cute Meatball Tee
Racked — 6:04 am ET (1004 GMT)


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