Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.
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Question: Question: What is the part of the shadow that is partially lit called? Answer: penumbra

Answer: The penumbra is the part of the shadow that is partially lit.

Question: Question: Diamond, graphite and fullerene are examples of what form of carbon? Answer: crystalline

Answer: Pure carbon can form different types of crystals. Crystalline forms of carbon include diamond, graphite, and fullerenes.

Question: Question: The rings of what planet can be easily seen from earth? Answer: saturn

Answer:
All of the outer planets have numerous moons. They also have planetary rings made of dust and other small particles. Only the rings of Saturn can be easily seen from Earth.