Modern astronomy has clung to the belief that the relativistic outflows or jets, responsible for the existence of electromagnetic radiation of particularly high energies, are located in the nuclei of ...

Researchers are uncovering the origins of cosmic rays, linking them to mysterious cosmic accelerators called PeVatrons New research from astrophysicists at Michigan State University may bring scientis ...

Physicists tested light speed using cosmic gamma-ray bursts. Study confirms Einstein's prediction that all light colors travel at same speed.

New research reports the most powerful cosmic rays ever detected. Because the rays lose energy as they travel through space, their detection at high energies means they are likely coming from sources ...

The speed of light has been one of science’s most trusted markers of stability. For more than a century, the idea that light moves through space at a constant speed has supported some of physics’ most ...

The Perseid meteor shower over Inner Mongolia, China, on August 14, 2023. When a meteor falls to the ground, it's called a meteorite. Costfoto / NurPhoto via Getty Images Every day, 48.5 tons of ...

OXFORD, England (Reuters) - Fifty years after humans first set foot on the moon, scientists believe rock samples collected by Apollo astronauts could help predict volcanic eruptions on Earth more ...