Star Formation

There are billions and billions of stars in our Universe, but a big question that many people ask is were do these stars come from and how are they formed. Well I am about to give some general information on star formation.

Stars form in molecular clouds, also refereed to as star nursery's because star formation occurs within them, that are dense enough to allow the formation of molecules. The most common molecule being Hydrogen seeing as how hydrogen makes up about 75%, of the universe's baryonic (ordinary) matter.

Molecular Cloud:

In these clouds turbulence or fluctuations make it so a certain amount of matter in the cloud can join together then gas and dust in the cloud begin to collapse under its gravitational attraction.  As it begins its collapse, the material in the center starts to get hotter.  This core of hot material is what we call a protostar.

Protostar:

A protostar cannot be called an "official" star until it begins nuclear fusion in its core.   Nuclear fusion begins when a protostar begins converting hydrogen into helium.

Stay tuned for the life cycle of a stars!!