18 Questions
What is the Crab Nebula known for?
Being formed from a supernova
When did the supernova that formed the Crab Nebula occur?
1054
What is a protostar?
A stage in star formation before nuclear fusion begins
What happens if a protostar doesn't become large enough to create nuclear fusion?
It becomes a brown dwarf
Which gas collapses to form protostars?
Gas from a nebula
What is the final outcome if a protostar achieves nuclear fusion at its core?
A new star is formed
What is a brown dwarf classified as?
Between a planet and a star
What is the most well-known planetary nebula mentioned in the text?
Crab Nebula
What celestial event led to the formation of the Crab Nebula?
Supernova
What is the defining characteristic of a protostar according to the text?
It is yet to develop nuclear fusion in its core
If a protostar doesn't become large enough to create nuclear fusion, what will it become?
Brown dwarf
Which class of celestial objects does a brown dwarf fall under?
Planet
What will happen if a protostar runs out of material before achieving nuclear fusion?
It will become a brown dwarf
At what stage of star formation do protostars represent?
Initial stage
Which type of nebula is the Crab Nebula?
Supernova remnant nebula
What determines whether a protostar will eventually become a star?
Achieving nuclear fusion at its core
What is the primary factor responsible for creating protostars according to the text?
Gravitational collapse of gas from a nebula
What distinguishes a brown dwarf from other celestial objects?
Its small size similar to planets
Explore the process of star fusion and the production of iron in high-mass stars. Learn why iron is a limiting factor in nuclear fusion within stars and the dramatic consequences that follow.
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