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|
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2
|
Nebulae are made of ____ and dust
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7
|
______ Giant stars are formed when the hydrogen runs out in the core
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8
|
This is the first thing formed by the collapse of gas and dust
|
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9
|
______ Fusion is the energy source for a star
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11
|
When a massive star explodes
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12
|
This is the force that causes collapse and formation of stars
|
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13
|
Black ______ are the densest objects in the universe
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14
|
When the Sun turns into a red giant it will swallow up Mercury and _____
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|
|
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|
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1
|
Red _______ stars are the largest stars by volume
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3
|
______ Nebulae are where stars are formed
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4
|
Fusion gives out ____ and heat energy
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|
5
|
This type of star is very dense, formed after a supernova
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6
|
A white ______ star is formed by the collapse of the core of a red giant
|
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8
|
A ______ nebula is formed when the outer layers of a red giant are shed
|
|
10
|
Elements heavier than ______ are formed in supernovae
|
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11
|
Main ________ stars fuse hydrogen into helium in their cores
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|
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