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    The elements in humans originally came from the Sun, correct?

    I'm doing an informative speech on the life cycle of the Sun and I know that humans are fundamentally made of "star material", but would it be wrong to say the elements in humans came from specifically from our star, the Sun. I want to use this as my hook, but everyone always says humans came...
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    Is Encyclopædia Britannica a credible source?

    Is Encyclopædia Britannica a credible source? For an academic paper?
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    Why are charge-coupled devices (CCDs) more useful than photographic plates in astronomy?

    A) CCDs are cheap and disposable B) CCDs do not produce diffraction fringes C) CCDs can measure brightness more precisely D) CCDs are not susceptible to chromatic aberration Can anyone answer this please?
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