Stars
Planets
Galaxies
100
A star's color is determined by its
What is temperature?
100
The order of the 8 planets from closest to the sun to furthest is:
What is mercury, venus, earth, mars, jupiter, saturn, neptune, uranus?
100
A galaxy contains this many stars.
What is billions of stars?
200
The coolest stars are
What is red?
200
The planets orbit the sun because of
What is the sun's gravity?
200
This type of galaxy has a bulge at the center and spiral arms made of dust and gas.
What is a spiral galaxy?
300
The hottest stars are
What is blue?
300
The inner planets are made of
What is mostly rock and ice?
300
This type of galaxy is round or oval and stopped making new stars 5 billion years ago.
What is an elliptical galaxy?
400
The source of light for most bright objects in outer space is
What are stars in our galaxy?
400
The outer planets are made mostly of
What is gas?
400
This type of galaxy has no definite shape.
What is an irregular galaxy?
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