Large scale structure

We briefly discuss some aspects of the problem of forming large scale struc tures in the Universe. The basic picture that initially small perturbations generated by inflation grow by the process of gravitational instability to give the observed structures is largely consistent with the observations. The growth of the perturbations depends crucially on the contents of the Un iverse, and we discuss a few variants of the cold dark matter model. Many o f these models are consistent with present observations. Future observation s hold the possibility of deciding amongst these models.