Planets Sometimes Appear to Reverse Direction in the Night Sky

question 49

True/False

Planets sometimes appear to reverse direction in the night sky and drift westward.

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Definitions:

Photosynthesizing Bacteria

Microorganisms that convert light energy into chemical energy through the process of photosynthesis.

Terrestrial Plants

Plants that grow on land, as opposed to aquatic (water-based) or epiphytic (growing on other plants) plants.

Primitive Atmosphere

The early atmosphere of Earth, which was very different in composition from the current one, possibly composed of gases such as methane, ammonia, and water vapor.

Photosynthetic Bacteria

Bacteria that are capable of producing their own food through the process of photosynthesis.