The Universe is acting funny. Or we’re looking at it wrong.

There’s a problem with the Universe.

Or, possibly, there’s a problem with how we’re observing it. Either way, something’s fishy.

In a nutshell, the Universe is expanding. There’s a whole bunch of different ways to measure that expansion. The good news is these methods all get roughly the same number for it. The bad news is they don’t get exactly the same number. One group of methods gets one number, and another group gets another number.

This discrepancy has been around awhile, and it’s not g...