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WeвЂ™re not exactly yes exactly how old we're вЂ” cosmologically, that is. The primary practices experts used to assess the chronilogical age of the universe donвЂ™t agree with one another. Numerous physicists wish a newly relevant method that includes gravitational-wave findings will re re solve this age discrepancy forever.
But this new method may never be because simple as scientists hoped. a paper that is new Hsin-Yu Chen, a postdoc during the MIT Kavli Institute for Astrophysics and Space analysis, defines a possible issue using the technique that, or even addressed, could catastrophically compromise its results.
Right right Here, Chen answers questions regarding the brand new technique, the problem she unearthed, and exactly just what scientists need to do to eliminate it. Her answers have already been modified for size and quality.
Q: so how exactly does the brand new way of dating the world work?
A: Observing gravitational-wave sources can provide us a completely independent way to assess the chronilogical age of the world. To show its age, we must fast know how the world is expanding. Also to find this expansion price, we should understand a couple of things: what lengths away are cosmic systems like galaxies, and exactly how fast they have been traveling far from us.