29 January 2018
Astronomers discover a fossil of the Reionisation era
...hydrogen atoms). This process of particles pairing up is called "Recombination" and it occurred approximately 240,000 to 300,000 years ...what appears to be a true fossil of the Reionisation era. After studying the star formation history of a galaxy ...
28 December 2016
Discrepancies in data suggest less dark matter now than after the big bang
... unstable particles with a rather long lifespan: in the era of the formation of hydrogen (hundreds of thousands of ...today's Universe there is 5% less dark matter than in the recombination era. We are not currently able to say how quickly this unstable...
