Recent gamma-ray observations support the longstanding theory that superspeedy particles called cosmic rays have their origin in the havoc-ridden regions around young star clusters.
Observations out of Antarctica support the idea that the most energetic of the superspeedy space particles raining down on Earth are not from gamma-ray bursts. The new result prolongs a long-standing mystery in astrophysics.
A cluster of detections in the Northern Hemisphere sky might point to a source for the most energetic particles bombarding Earth's atmosphere.
Astronomers have detected more extremely energetic cosmic particles coming from one side of the sky than the other.