Life Cycle of a StarLife Cycle of a Star

NebulaNebula

All stars no matter All stars no matter what size begin as what size begin as NebulasNebulas

Nebulas are huge Nebulas are huge clouds of dust and clouds of dust and gas gas

ProtostarsProtostars

The dust and gas in a The dust and gas in a nebula pulls together into nebula pulls together into a spherea sphere

The sphere becomes so The sphere becomes so hot that nuclear hot that nuclear reactions occurreactions occur

A star is born!A star is born!

******Congrats!!!Congrats!!!

It’s a girl!It’s a girl!

Sizes of starsSizes of stars

Small and Medium starsSmall and Medium stars SUNSUN______________________________________

Giants and SupergiantsGiants and Supergiants

MonocerotisMonocerotis

Medium and Small Stars Medium and Small Stars

Expand hundreds Expand hundreds of times their size of times their size as they run out of as they run out of fuel and become fuel and become Red GiantsRed Giants

Soon most of the Soon most of the gas dissipates gas dissipates (goes away)(goes away)

White Dwarf/Black DwarfWhite Dwarf/Black Dwarf

All that is left is a White-All that is left is a White-Hot Core called a Hot Core called a White White DwarfDwarf

Once it cools it becomes Once it cools it becomes a a Black DwarfBlack Dwarf

The star is now officially The star is now officially deaddead

R.I.P. R.I.P.

Giant and Super Giant Giant and Super Giant StarsStars

Explode a.k.a. Explode a.k.a. SUPERNOVA SUPERNOVA

when they burn all of when they burn all of their fueltheir fuel

Black Hole or a Neutron Black Hole or a Neutron Star?Star?

Small giants become Small giants become Neutron StarsNeutron Stars

Supergiants becomeSupergiants become

Black HolesBlack Holes