Astronomers have long wondered where high-energy cosmic rays come from within our galaxy.
And now, new observations with the High Altitude Water Cherenkov Experiment (HAWC) observatory reveal an unlikely candidate: an otherwise mundane giant molecular cloud.
Image: This image, created using data from the European Space Agency’s Herschel and Planck space telescopes, shows a piece of the Taurus Molecular Cloud. (Image: © ESA/Herschel/Planck; J. D. Soler, MPIA)
