The universe is expanding but astrophysicists aren’t sure exactly how fast that expansion is happening—not because there aren’t answers, but rather because the answers they could give don’t agree.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/3-gravitationa.jpg)
Source:
https://phys.org/news/2020-11-gravitational-lenses-key-expansion-universe.html