Stars
Gravity
The closest star system to us is
Alpha Centauri
The outermost layer of a star is
the corona
Stars stop fusing elements at
Iron
If a star is about 3-8 times the mass of the Sun, then the core collapses into a
Neutron star
This is the fourth state of matter.
Plasma
The closest star to Earth is the
Sun
Stars are born in what
Nebulae
Low mass stars when eventually cooled will become cold, black stars made of what
Helium
When the outer layers of the star are blasted away by a huge shockwave called a
Supernova explosion
This process is what stars perform in their cores.
Nuclear fusion
This is the only area in a star that is hot and dense enough for this process to occur
Nuclear fusion
A nebula is made up mostly of this gas
Hydrogen
When hydrogen fusion stops the outer layers of a star will transform into a
Red giant
When gravity is so intense that not even light can escape the star a what is formed
Black hole
We refer to our star system as the
Solar system
The third layer from the center of a star is called the
Convective zone
In a nebula gasses will start to clump together because of
When a star can no longer fuse heavier elements, the outer layers of gas will blow away from the center forming a
Planetary nebula
More than 5 billion years ago, a star exploded, and the material it ejected underwent a process called
Nucleosynthesis
If there are star systems with more than two stars its called a
Binary star system
The layer we can see around a star is called the
photosphere
A nebula forming many stars is often called a what
Stellar nursery
The remains of a star is called a
White dwarf
Average mass stars like our sun can live for how long
Billions of years