new observation hekp astronomers hone in on a long-standing mystery about where cosmic rays come from. space.com :says
A century-old celestial mystery is one step closer to being solved as researchers discover a dozen ultra-powerful natural particle accelerators in our galaxy.
The findings help astronomers understand the origin of cosmic rays — charged particles and atomic nuclei flying through space at near light speed that have been imbued with mind-boggling amounts of energy.
Discovered in 1912, cosmic rays arrive from almost every direction in the Milky Way, though scientists have yet to determine exactly how they reach their ultra-fast speeds, according to NASA.
Many researchers suspected that cosmic rays are flung away from massive stars as they die in supernova explosions, Siming Liu, an astrophysicist with the Southwest Jiaotong University in Chengdu, told Live Science. During such events, "stars release the same amount of energy in two months as over their whole life," he added.
for further reading on this observation visit the link below :
https://www.space.com/ultra-high-energy-particles
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