What happens first when a star begins to run out of fuel?
Which characteristic is used to measure the amount of light radiated by a star?
How do spectrographs help astronomers classify stars?
What is the main element that stars are made of?
What causes a star to shine brightly?
What is the initial stage of all stars?
What is the Sun classified as on the Hertzsprung-Russell diagram?
Which property of a star is closely related to its temperature?
Some objects in space are created from clouds of gas and dust.What will happen if the cloud does not have enough mass?
Which event signals the birth of a star?
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