3 concerns: Hsin-Yu Chen on treading gently whenever dating the world

Press Contact :

Previous image

We’re nearly certain just how old our company is — cosmologically, that is. The methods that are main used to assess the chronilogical age of the universe don’t agree with one another. Numerous physicists wish a technique that is newly applicable includes gravitational-wave findings will solve this age discrepancy for good.

But this new strategy may never be because simple as researchers hoped. a brand new paper by Hsin-Yu Chen, a postdoc during the MIT Kavli Institute for Astrophysics and Space analysis, defines a possible issue because of the method that, or even addressed, could catastrophically compromise its outcomes.

right Here, Chen answers questions regarding the brand new method, the matter she unearthed, and just exactly exactly what scientists should do to solve it. Her answers have already been edited for size and quality.

Q: so how exactly does the method that is new dating the world work?

A: Observing gravitational-wave sources will give 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. And also to find this expansion price, you want to understand a couple of things: how long away are cosmic bodies like galaxies, and just how fast they have been traveling far from us. Plus »