Consider the following observations. Classify each observation based on whether it is a real observation (a true statement of something we can actually see from Earth) or one that is not real (a statement of something that does not really occur as seen from Earth).

Question Continuation

1. Mercury goes through a full cycle of phases

2. Moon rises in east, sets in west each day

3. Stars circle daily around north or south celestial pole

The true statements are are (2) and (3)

2. Moon rises in east, sets in west each day.

From all part of the earth, we can see and observe the moon only that the stars move in parallel to the horizon in the north pole.

3. Stars circle daily around north or south celestial pole.

The relative position of starts are always altered because of the earth's rotation

While (1) does not really occur as seen from Earth

1. Mercury goes through a full cycle of phases

We can see the mercury from the Earth but in its whole form not in its phases.