Astronomy is a lovely undertaking by day or by night, but the sky has delights to offer in the between times as well. When ...

New research reports the most powerful cosmic rays ever detected. Because the rays lose energy as they travel through space, ...

Using a decade’s worth of data from the H.E.S.S. telescopes in Namibia, they’ve observed a sharp kink in the energy spectrum ...

Astrophysicists have detected the most energetic electrons ever recorded raining down on Earth. With trillions of times the ...

The last day of the meteorological autumn is today, that is the period of time between summer and winter. The meteorological ...

For optimal vitamin D synthesis, mid-morning sunlight between 10 a.m. and 12 noon is recommended due to the effective angle ...

The December solstice marks the start of winter across the Northern Hemisphere, but meteorologists commonly consider a different date to mark the beginning of the new season. On the day of the ...

The High Energy Stereoscopic System is a ground-based gamma-ray telescope in the highlands of Namibia and sensitive in the ...

Related: Earth slammed by ultra-powerful 'goddess particle' cosmic ray, and we have no idea where it came from Cosmic rays are high-energy particles produced by the sun; stellar explosions called ...

Related: Earth slammed by ultra-powerful 'goddess particle' cosmic ray, and we have no idea where it came from Cosmic rays are high-energy particles produced by the sun; stellar explosions called ...

An international team of scientists has recorded the most powerful cosmic rays in the history of observations. The mysterious radiation sources are located relatively close to the Earth. Scientists ...