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A light year measures
distance
Apollo 11
the rotation of the Earth on its axis
gravitational pull
galaxies
corona
these objects are moving away from us
a comet
Most of the objects astronomers observe outside our galaxy show what is called a red-shift. What does this red-shift mean about these objects' motions?
distance
Apollo 11
the rotation of the Earth on its axis
gravitational pull
galaxies
corona
these objects are moving away from us
a comet
Periodically, there are spectacular meteor showers on Earth. These showers usually occur because the Earth's orbit passes through the remains of
distance
Apollo 11
the rotation of the Earth on its axis
gravitational pull
galaxies
corona
these objects are moving away from us
a comet
What are giant collections of clouds of gas and dust, along with many millions of stars, called?
distance
Apollo 11
the rotation of the Earth on its axis
gravitational pull
galaxies
corona
these objects are moving away from us
a comet
Which of these causes days and nights
distance
Apollo 11
the rotation of the Earth on its axis
gravitational pull
galaxies
corona
these objects are moving away from us
a comet
The first manned-mission to land on the moon was commanded by Neil Armstrong and was called
distance
Apollo 11
the rotation of the Earth on its axis
gravitational pull
galaxies
corona
these objects are moving away from us
a comet
A person weighs more on the Earth than on the moon because the Earth has a greater
distance
Apollo 11
the rotation of the Earth on its axis
gravitational pull
galaxies
corona
these objects are moving away from us
a comet
Which layer of the sun is seen during a total solar eclipse?
distance
Apollo 11
the rotation of the Earth on its axis
gravitational pull
galaxies
corona
these objects are moving away from us
a comet
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