Early Stars
Second stage of a star after the stellar nebula.
What is a protostar?
The oldest white dwarfs must be less than this many years.
The explosion that large/massive stars experience.
What is a supernova?
The fusion of two atoms produces a lot of this.
What is energy?
This force causes causes stellar nebula to become a protostar.
What is gravity?
A space term that means "cloud of gas"
What is a nebula?
Stage of a small star when it no longer has fuel, but is still radiating its energy away slowly.
What is a white dwarf?
What is a neutron star?
Main sequence stars fuse this element to produce their energy?
What is hydrogen?
Blue hypergiants. Main sequence stars who burn blue.
A protostar becomes a main sequence star after this process begins.
What is nuclear fusion?
The stage that stars spend most of their life.
What is their main sequence?
At this stage the life cycles of small/medium and large/massive stars stars diverge.
What is Red Giant and Red Supergiant?
Red Giants and Red Supergiants fuse this element to produce energy.
Large stars are considered to be this many times our sun.
What is 10-25x the size of our Sun?
A star that does not have enough mass to become a main sequence star.
What is a brown dwarf?
The stage after main sequence when a small/medium star expands.
What is a Red Giant?
The most massive stars condense into this after a supernova?
What is a blackhole?
Two hydrogen atoms are fused together to make this element.
What is helium?
What is more than 25x times the size of our Sun?
A stellar nebula takes this much time to become a protostar.
What is 10 million years?
The remains of a white dwarf.
What is a black dwarf?
Supernova release the same amount of energy in one moment as our Sun produces in this many years.
What is 10 billion years?
Elements heavier than iron are made during this stage of a star's life.
What is a supernova?
What size stars cycle through their lives fastest?
What are massive stars?