

Think of the universe not as objects flying apart, but as the fabric of space itself stretching. The more distance there is between two objects, the more ‘new space’ is generated every second, across that entire distance.
Light travels 9.461 × 1015 meters per year. At a certain distance (the Hubble limit), more than 9.461 × 1015 meters of new space is created in a year. So for stars beyond the Hubble limit, the light sent from those stars actually ends up further from us after a year than when it started. That’s what “moving away from us faster than light” means.


Why act like this is an intractable problem? Several of the models succeeded 100% of the time. That is the problem “going somewhere.” There’s clearly a difference in the ability to handle these problems in a SOTA models compared to others.