Origin Of Cosmic Rays: VERITAS Telescopes Help Solve 100-year-old Mystery

091102171716-large

This representative-color figure shows the very-high-energy gamma-ray emission observed by VERITAS coming from the Cigar Galaxy, also known as Messier 82.

Nearly 100 years ago, scientists detected the first signs of cosmic rays — subatomic particles (mostly protons) that zip through space at nearly the speed of light. The most energetic cosmic rays hit with the punch of a 98-mph fastball, even though they are smaller than an atom. Astronomers questioned what natural force could accelerate particles to such a speed. New evidence from the VERITAS telescope array shows that cosmic rays likely are powered by exploding stars and stellar “winds.”

Continue reading… “Origin Of Cosmic Rays: VERITAS Telescopes Help Solve 100-year-old Mystery”