Stellar webquestBy: Daniel Afridi and

Paulo medina

Red giantA Red giant is a big giant star of low mass in

a phase of stellar evolution. The sun will turn into a red giant in about

four billions years. Red giant forms when a star runs out of

hydrogen fuel.The Red giant is made out of many protons

and elements such carbon.Might end up a neutron star or a black hole

depending on the mass they are born with.

Red Giant

Neutron starNeutron stars are stars that collapsed under

gravity.Made of neutronsForms during super nova explosions of

massive stars.Forms from core of collapsing star

condensing the core into a sphere.Forms if a Red Giant has high mass.

Neutron star

Neutron star

White DwarfWhite dwarfs are remains of a star that

collapsed.Consists of electron degenerated matter.Form from collapse of stellar cores in which

nuclear fusion has stopped.Consist of carbon and oxygen.The Red giant is able to turn into a white

dwarf if it has low mass.

White Dwarf

Life Cycle of a Massive star

Nuclear reaction- Triple Alpha

Nuclear reaction

Sun’s deathThe sun is about 4.5 billions years old. In

about 5 more billion years the sun will die. As the sun runs out of hydrogen and helium the sun will get bigger and slowly turn into a red giant. Once it is a red giant it will slowly shrink in diameter and turn into a white dwarf. Once it cools off even more it will turn into a Black Dwarf or a dead star.