23 Questions
What is the Crab Nebula?
A supernova remnant formed from an exploding star in 1054
What is a protostar?
A star that has not yet achieved nuclear fusion
What happens if a protostar runs out of material before achieving nuclear fusion?
It will become a brown dwarf
Which of the following is NOT a characteristic of a protostar?
It is a celestial object between a planet and a star
What was the Crab Nebula formed from?
A supernova explosion in 1054
Which of the following statements about protostars is true?
Not all protostars will become stars
What is the difference between a protostar and a brown dwarf?
A protostar is a stage in the formation of a star, while a brown dwarf is not
What is the significance of the Crab Nebula?
It is a well-known supernova remnant
What is the primary difference between a nebula and a protostar?
A nebula is a cloud of gas and dust, while a protostar is a collapsing sphere of gas
What is the first step in forming a star?
The collapse of a gas cloud into a protostar
What celestial event led to the formation of the Crab Nebula?
Supernova
What is the role of Chinese astronomers in the history of the Crab Nebula?
They documented its formation from a supernova in 1054.
What happens if a protostar does not become large enough to achieve nuclear fusion?
It evolves into a brown dwarf.
What is the defining characteristic of a protostar?
It is still undergoing gravitational compression.
What celestial event led to the formation of the Crab Nebula?
A supernova explosion
What is the primary difference between a protostar and a brown dwarf?
Size
What is the role of Chinese astronomers in the history of the Crab Nebula?
Documented the supernova that created the Crab Nebula
Why might a protostar never become a star?
It doesn't become large enough to achieve nuclear fusion
What is a common fate for protostars that do not achieve nuclear fusion?
Becoming a brown dwarf
What is the significant milestone in a protostar's development when it becomes a star?
Development of nuclear fusion in its core
What class of celestial objects is a brown dwarf placed between?
Planet and star
What is the defining characteristic of protostars?
'Gravitational glow' from collapsing gas
What is the reason behind the formation of protostars?
Gas collapse under gravitational forces.
Explore the process of star formation, starting from massive gas clouds collapsing to the creation of protostars surrounded by dust and gas disks. Learn about the oldest process in the universe.
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