sentence: Quasars are very bright objects with a very high redshift.
sentences_before: Later in his career Burbidge refused to accept the Big Bang theory which describes the start of the universe.
sentences_after: The Big Bank theorists say that they come from places extremely far away in the universe. But Burbidge thought that quasars come from nearby galaxies, travelling near the speed of light, which explains their redshift. He thought they produced new matter as old matter was destroyed by reactions.
concept_name: quasar
headings: Geoffrey Burbidge Later career
categories: 1925 births 2010 deaths English astronomers Astrophysicists English physicists English science writers Alumni of University College London