Cosmic rays traced to centers of star birth | Science News

Real Science. Real News.

Science News is a nonprofit.

Support us by subscribing now.


Cosmic rays traced to centers of star birth

By detecting gamma rays, a new generation of telescopes bolsters theory that supernovas are origin of some cosmic rays

1:45pm, November 2, 2009

WASHINGTON, D.C. — Astronomers have for the first time traced gamma rays, the most energetic form of light, to galaxies undergoing a frenzy of star birth. The finding, which has revealed a new class of galactic gamma-ray sources, is not unexpected. But it provides new hints about the origin of many cosmic rays, the high-speed protons and other charged particles of extraordinarily high energies that bombard Earth.

According to the prevailing theory, cosmic rays are

This article is only available to Science News subscribers. Already a subscriber? Log in now.
Or subscribe today for full access.

Get Science News headlines by e-mail.

More from Science News

From the Nature Index Paid Content