Big Bang

University of Cambridge

What caused the Universe to change dramatically, 700 million years after the Big Bang?




Astronomers observe most distant oxygen ever
An international team of astronomers have detected glowing oxygen in a distant galaxy seen just 700 million years after the Big Bang. This is the most distant galaxy in which oxygen has ever been unambiguously detected, and…
CAM.AC.UK

Big Bang 

Pronunciation: /bɪɡ ˈbaŋ/ 

NOUN

1Astronomy The rapid expansion of matter from a state of extremely high density and temperature which according to current cosmological theories marked the origin of theuniverse.

Example sentences

A fireball of radiation at extremely high temperature and density, but occupying a tiny volume, is believed to have formed around 13.7 billion years ago. This expanded and cooled, extremely fast at first, but more slowly as subatomic particles condensed into matter which later accumulated to form galaxiesand stars. The galaxies are currently still retreating from one another. What was left of the originalradiation continued to cool and has been detected as a uniform background of weak microwaveradiation.

2(In the UK) the introduction in 1986 of major changes in trading on the Stock Exchange,principally involving widening of membership, relaxation of rules for brokers, andcomputerization.