a star is born
how do stars begin there lives?
stars being their lives as parts of nebula's dust
what happens when stars being to run out of fuel?
when these stars being to run out of fuel then become red super gas giants
how do stars begin there life?
stars begin there lives as clouds or dust and gas called nebula.
the main sequence may last how many years?
a few hundred thousand years
spectral classes of stars
O B A F G K M
what is a nebula?
a nebula is a large cloud of gas and dust
if stars suddenly exposed what is it called?
this is called the supernova.
what may gravity may do?
gravity may cause the nebula to contract.
it will expand into a?
red giant massive stars will become red super giants
what color would the hotties star be or the coldest star
the color of the star indicates the temperature of the star blue stars are hotter than red stars are cooler
what dose gravity do?
gravity pulls the gas and dust together.
what forms a neutron star?
the remains of the core made from a neutron star very small and dense; emits radiation and radio waves
what happens to gas clouds?
matter in the gas cloud will begin to condense into a dense region called a protostar
how long will this phase last?
this phase will last until the star exhausts it remaining fuel.
stars live fusing what?
how are stars born?
how much gravity do stars have?
these have such a strong gravity that even light can not escape
what happens to the protostar?
the protostar continues to condense and it heats up.
the average will blow away their outer atmosphere to form what?
planetary nebula
there star forms what?
it forms layers like an onion forming different elements in different layers
what dose a mature star give off?
a mature star gives off light and heat.
what are the remains of a black hole?
OR are the remains of a black hole
life span star depends on its what?
size
the cores will do what?
the cores will remain behind and burn as a white dwarf in till they cool down
helium fuses with what?
carbon to make oxygen