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Q1: What happens during a penumbral lunar eclipse?<br>A)
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Q8: Almost all stars are in binary systems.
Q11: About a month ago, Laura ordered an
Q23: Jenny, who lives on a farm in
Q27: X-rays come from certain regions of the
Q36: A protostar will continue to collapse due
Q55: According to the United States Criminal Code,
Q64: Explain the difference between apparent visual brightness
Q68: The term _ refers to a change