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4
|
The temperatures and pressures inside a star are so great that nuclear '......' can happen
|
|
5
|
The Moon orbits the '.....'
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|
7
|
Stars about the same size as our Sun are called Red Giant star much bigger are called ?
|
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8
|
Nuclear reactions release energy to keep the star '...'
|
|
9
|
The age of our sun its about five '.......' years
|
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11
|
The universe countains '........' of Galaxies
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13
|
The life cycle of a star is determined by the '....'
|
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14
|
The closer you get to a star or a planet, the '.......' the force of attraction
|
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15
|
A star in its first stage of development is called what?
|
|
17
|
Orbit shape of the planet in our solar system
|
|
18
|
The name of our sun
|
|
19
|
The stage of a star when the fuel begin to run out and star begins to sweel
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