A crucial and powerful feature which distinguishes a scientific theory from other kinds of theories
to be falsified or supported
Which phases of the moon are caused by the Earth's shadow?
none of them! the moon is always half lit up
Which phases of the Moon are caused by the Earth's shadow?
None of them (Moon is always lit up. The only thing that is causes by our shadow is the eclipse)
Which phases of the Moon are caused by Earth's shadow?
None of them
If you could see stars during the daytime, the picture below shows what part of the sky would look like at noon on a day in July. The sun is among the starts in the constellation, Gemini, when the sun sets later that day. Which constellation would you expect the sun to be located?