Pinterest • The world’s catalogue of ideas

Astronomers have discovered the first pulsar (PSR J0337+1715) with two stars circling it. By watching the three objects orbit one another, observers will soon be able to perform the best-ever test of the "strong equivalence principle", which is a key prediction of Albert Einstein's general theory of relativity. #astrophysics

During ten seconds of weightlessness Brynle Barrett from the Laboratory of Photonics, Numerical Sciences and Nanosciences at the University of Bordeaux monitors an experiment to test the ‘weak equivalence principle’ – or why a feather in a vacuum falls as fast as a hammer.

3
1

Triple star system 'can reveal secrets of gravity'

Gravity news - "finding deviations (in the equivalence principle) would indicate a breakdown of general relativity" http://bbc.co.uk/news/science-environment-25598051

1