The force that makes them spherical
Gravity
The place where nuclear fusion occurs
The Core
Nebulae
Red dwarf is a stage in the life of this mass category of star
Low Mass Star
The name for two stars in a system
Binary Star System
Plasma
The layer that's visible to us
The Photosphere
The place within a nebula where stars form
Stellar Nursery
The type of nebula average mass stars create
Planetary Nebula
Black stars are made of this gas
Helium
The process that releases energy as light from the star
Nuclear Fusion
The outermost layer of a star
The Corona
The name of a star before it's actually a star
Protostar
Average mass stars expand into this once hydrogen fusion stops
Red Giant
Protostars move in this way to attract mass
A spinning motion
The heavier atoms that result when smaller atoms join together
Helium, lithium, or carbon
The area where energy radiates outward from the core
The Radiative Zone
The gas that mainly makes up nebulae
Hydrogen
The remains of a star at the center of a planetary nebula
The measurement label for the dimensions of nebulae
Light Years
Gravity causes this part of atoms in stars to fuse
The layer that carries heat towards the outer layers of the star
The Convective Zone
The heaviest element fused during nuclear fusion
Iron
The explosion that occurs when the outer layers of neutron stars are blasted away
Supernova Explosion
Light cannot escape from this
Black Hole