FLRW Metric
[Standard model of cosmology](https://texonom.com/standard-model-of-cosmology-f81198e095fa481baef9afa313687b62) [Cosmological principle](https://texonom.com/cosmological-principle-23c01007dee946a881843248f93d24bf) 


## Friedmann–Lemaître–Robertson–Walker metric





> [Friedmann–Lemaître–Robertson–Walker metric](https://en.wikipedia.org/wiki/Friedmann–Lemaître–Robertson–Walker_metric)





