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Jouer Test
1. 
Black holes don't have gravity
A.
True
B.
False
2. 
Galaxies...
A.
are a vast system of stars, gas, dust, and dark matter.
B.
can have a black hole in the center
C.
are a combination of stars and dust
3. 
The Milky Way has over 100 billion stars
A.
True
B.
False
4. 
Astronomers can take pictures of the Milky Way
A.
True
B.
False
5. 
An orbit is...
A.
a path that an object follows
B.
a perfect circle
6. 
The fatest satellite traveled at 635.266 km/h
A.
True
B.
False
7. 
Telescopes were invented 200 years ago
A.
True
B.
False
8. 
The moon has a side we can't see
A.
True
B.
False
9. 
The sun is as big as...
A.
230 planet Earth
B.
13.760 planet Earth
C.
240.500 planet Earth
D.
635.000 planet Earth
E.
1.300.000 planet Earth
10. 
A supernova is
A.
a very big star
B.
an explosion of a star
11. 
The universe is 13.79 billion years old. The milky way is
A.
2.50 billion years old
B.
8.46 billion years old
C.
13.61 billion years old
12. 
The milky way
A.
includes the Solar System
B.
is constantly moving through the universe
C.
is the smallest galaxy in the universe