TALK: Does extreme gravity affect how objects fall?

ABSTRACT: Galileo famously showed that all objects, no matter how massive, fall the same way. This is a key idea in Einstein's theory of gravity - but almost all other theories of gravity predict that a star with strong enough gravity should actually fall differently. We were recently able to test this: we compared a neutron star, with its incredibly strong gravity, to a white dwarf, and we found that they fell almost exactly the same way, as Einstein predicted.