Early Stages
What eventually happens to a main sequence star when it runs out of hydrogen fuel
it expands to become a red giant
After a supernova, the remnant core that is 8 more times the mass of the sun may collapse into this
a black hole
the earliest stage of a star's life
protostar
This phase in a star's life cycle begins when hydrogen in the core is converted to helium through nuclear fusion
main sequence
the powerhouse of the cell
mitochondria
What causes a protostar to heat up
the increasing pressure and temperature
These stars give off radio waves as they spin rapidly and those waves are emitted in pulses
pulsars
powerful explosion marking the death of a massive star
supernova
What are stars with a mass similar to the Sun that ends with a black dwarf?
medium-sized stars
1 revolution is equivalent to how many days around the sun
365.24 days
What happens to stars with a larger mass
they burn through their fuel faster and have a shorter lifespan
Like black holes, the core of a massive-sized star that is 1.5 to 4 times as big as the sun may end up like this after a supernova
neutron star
process where hydrogen and helium combine to release energy
nuclear fusion
This is the final remnant of a medium-sized star, in which the star's matter is extremely dense
white dwarf
a regular repeating path that one object in space takes around another one
orbit
What is the primary fuel for nuclear fusion in the early stages of a star's life
hydrogen
The process that occurs after reaching the red giant phase where the core temperature increases
helium burning
massive clouds of dust and gas in space
nebula
In this stage, the outer layers of a star grow bigger and drift into space to form a cloud of gas
planetary nebula
What type of galaxy is the Milky Way
What is the primary factor that triggers the formation of a protostar
gravity
The force that draws matter together and drives the formation of stars
gravity
star that expands after hydrogen fuel decreases
red giant
the star's mass
If a star's conventional color is blue, what class is it in
Class O