A constellation is a
A light year is the ________ that light travels in one year.
When we say an object is in orbit, we mean that it is traveling around another object in space. What do planets in a solar system orbit?
The brightness of a star depends on
Apparent brightness is what?
Which star has the greatest apparent brightness?
The measurement between two points is called...
What is the brightness of a star called when seen from Earth's surface?
What word is the same as magnitude or brightness?
The most commonly used measurement for distance in astronomy
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