Collapsed Star Proves Another of Einstein’s Theories – Futurism

Free Falling

Yet again, scientists have validated a major component of Einsteins theory of general relativity.

Specifically, a trio of two white dwarf stars and a collapsed neutron star demonstrated the concept of freefall, according to research published this month in the journal Astronomy and Astrophysics. Thats the idea, famously illustrated by Galileos Leaning Tower of Pisa thought experiment, that gravity accelerates every falling object at the same rate. The idea has been challenged under extreme conditions, but incredibly precise measurements of the three stars upheld it and with it, Einsteins theory.

Scientists from the University of Manchester identified the unusual instance of freefall among three stars. First, theres a white dwarf star and a pulsar a dead star 1.44 times as massive as the Sun that collapsed into a 15.5-mile-wide sphere that rapidly orbit each other.

Both also orbit another white dwarf, similar to how the Earth and Moon orbit both the Sun and one another. This presented an unusual opportunity: while astronomers could perform similar experiments on our solar system, scientists have speculated that objects held together by their own gravitational pull like pulsars might violate the universality of freefall.

Such a violation would also violate general relativity, which assumes a constant gravitational acceleration across all scenarios.

But by tracking the three stars positions down to the nanosecond, the Manchester team found that the first white dwarf and the pulsar were both accelerating toward the second white dwarf at the exact same pace validating general relativity yet again.

READ MORE: Astrophysicists confirm cornerstone of Einsteins Theory of Relativity [University of Manchester]

More on general relativity: New Theory Could Solve Universes Biggest Paradox

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Collapsed Star Proves Another of Einstein's Theories - Futurism