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Newton's gravity unchanged over cosmic time

Newton's gravity unchanged over cosmic time

Media issued by the ARC Centre of Excellence for All-sky Astrophysics

CAASTRO Australian astronomers have combined all observations of supernovae ever made to determine that the strength of gravity has remained unchanged over the last nine billion years.

Newton's gravitational constant, known as G, describes the attractive force between two objects, together with the separation between them and their masses.

CAASTRO is funded under the Australian Research Council Centres of Excellence scheme.


Image Credit: NASA/CXC/SAO

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