The star’s outer layers of gas expand into space forming a _____ which is often the shape of a ring or bubble.
Nebula
This star is the core of a massive star and is an incredibly dense star , made mostly of neutrons, and is very small but heavy.
Neutron star
_____sequence stars are the LONGEST phase of a star’s cycle. It is any star that has a hot, dense core which fuses ____ into helium to produce energy .
Main; hydrogen
A white dwarf cools until it becomes a _____ dwarf, which emits NO energy/light.
Black dwarf
An _________nebula is a massive cloud of hydrogen and helium gases, dust and space plasma.
Interstellar
After millions of years, a star runs out of hydrogen. It then expands and cools, becoming a _______.
Red giant
Stars are made of what two things?
Helium and hydrogen
Red ___ stars are when the star begins to age, and use up its hydrogen supply. It begins to cool down.
Giant
Stars are born from interstellar nebulae once enough ___ is clumped together.
Hydrogen
A Super Nova happens once a ______ star can’t handle its own gravity any longer, and the core collapses and _____!
Red super giant; explodes
A _____ dwarf is a dying star who has exhausted all of its nuclear fuel.
white dwarf
Black holes form at the END of ______ stars lives
Massive
A protostar is a _____ star.
Baby
A black hole is an area of such immense gravity that nothing-not even _____can escape from it.
Light
A _____nebula is created when a star blows off its outer layers after it has run out of ___. This part of the cycle is very colorful.
Planetary , fuel