Racing across the universe for the last 7.3 billion years, two gamma-ray photons arrived at NASA's orbiting Fermi Gamma-ray Space Telescope within nine-tenths of a second of one another. The dead-heat finish may stoke the fires of debate among physicists over Einstein's special theory of relativity because one of the photons possessed a million times more energy than the other.
- Gamma-ray photon race ends in dead heat; Einstein wins this roundWed, 28 Oct 2009, 16:37:15 EDT
- NASA's Fermi telescope reveals best-ever view of the gamma-ray skyWed, 11 Mar 2009, 12:05:11 EDT
- Fermi Large Area Telescope reveals pulsing gamma-ray sourcesWed, 9 Sep 2009, 10:51:08 EDT
- Most extreme gamma-ray blast ever, seen by Fermi gamma-ray space telescopeThu, 19 Feb 2009, 14:30:38 EST
- NASA renames observatory for Fermi, reveals entire gamma-ray skyTue, 26 Aug 2008, 17:36:20 EDT