Question: how stars are made?

Melissa Ladyman answered on 21 Jun 2016:

Scientists are still trying to understand exactly why and how planets and stars form. At the moment scientists think that stars form out of giant clouds of gas and dust. The giant cloud of dust is always moving and at some point the centre of the cloud starts to collapse on itself and swirl about. The dusts starts to clump together and as it gets bigger, gravity starts getting stronger and the cloud spins and clumps even more. Eventually the centre of the dust cloud is so closely packed that it heats up and starts to burn, and this is what will eventually become a sun.

This website explains it much better than me:

http://hubblesite.org/hubble_discoveries/discovering_planets_beyond/how-do-planets-form