What the article actually wants to say (and it does so down the line) is that:
> If you look at a pulsar, that is 12B light years away from us, it will pulsate significantly slower than expected.
In this case, I think, it is that the pulsar blinks slower by a factor of 5. I presume they already have corrected out the redshift related time dilation and 5 is what was left.
> If you look at a pulsar, that is 12B light years away from us, it will pulsate significantly slower than expected.
In this case, I think, it is that the pulsar blinks slower by a factor of 5. I presume they already have corrected out the redshift related time dilation and 5 is what was left.