Cosmic microwave background is a sea of radiation that provides ... has since been revived to describe the mysterious dark energy that is currently speeding up the universe’s acceleration.

However, after reaching an altitude of 5,300 meters, Hess unveiled a natural source of high-energy particles from space. Today, we call those particles cosmic rays. Now, H.E.S.S. scientists are ex ...

The cosmic microwave background (CMB, CMBR), in Big Bang cosmology ... their wavelength to increase over time (and wavelength is inversely proportional to energy according to Planck's relation). This ...