1)
Fill the gap:
A galaxy is a ________________________ of stars, gas, dust, and other material.
2)
Fill the gap:
Our ________________________ is held together by the sun's gravity.
3) The Milky Way has at least ...... stars in it.
-
100 billion
-
200 billion
-
200 million
4)
Fill the gap:
The Milky Way is part of a collection of other galaxies called the ________________________
5)
Fill the gap:
Galaxies may be elliptical, ________________________ or irregular in shape.
6)
Fill the gap:
In the center of our galaxy is the 'bulge' or ________________________ center.
7)
Fill the gap:
Scientists believe that at the very center of the Milky Way is a giant ________________________
8)
Fill the gap:
The spiral arms make the galaxy look a little like a ________________________
9) Which part of the Milky Way is the least crowded?
-
the galactic center
-
the disk
-
the halo
10) Who proved that our galaxy was made of far away stars that were close together?
-
the astronomer Galileo Galilei
-
Ancient Greek philosophers
December 12, 2016
