Gravitational Redshift: 8,000 Galaxy Clusters Confirm General Theory Of Relativity In A Big Way
Wednesday, September 28, 2011 - 14:40
in Astronomy & Space
Where would we be without relativity? Observations in astronomy are based on light emitted from stars and galaxies and the light will be affected by gravity, according to the General Theory of Relativity, which is actually quite special, despite its name. Observations are one thing, but interpretations in astronomy are based on the correctness of the theory of relatively, yet it has never been possible to test Einstein's theory of gravity on scales larger than the solar system. Astrophysicists at the Dark Cosmology Centre at the Niels Bohr Institute say they have managed to get much bigger - 'grotesquely' bigger in their terms - and measure how the light is affected by gravity on its way out of galaxy clusters. read more
