What stage of a star's life does it spend most of its time?
Cosmology Review

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Science
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9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Main Sequence
2.
FLASHCARD QUESTION
Front
According to the Big Bang theory, how is the universe changing?
Back
It is expanding.
3.
FLASHCARD QUESTION
Front
What explains the difference in formation between inner and outer planets in the solar system?
Back
The temperature near the Sun was too great for most gases to condense on the inner planets.
4.
FLASHCARD QUESTION
Front
Why is the sun not expected to turn into a black hole?
Back
The sun does not have enough mass to become a black hole.
5.
FLASHCARD QUESTION
Front
What supports the theory that the universe is constantly changing?
Back
The average distance between galaxies is increasing.
6.
FLASHCARD QUESTION
Front
What is cosmology?
Back
The study of the origin, evolution, and eventual fate of the universe.
7.
FLASHCARD QUESTION
Front
What is a red giant?
Back
A late stage in a star's life cycle where it expands and cools after exhausting its hydrogen fuel.
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