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  1. Astronomy

    Newfound Galaxy Goes the Distance

    Astronomers have discovered a galaxy so remote that the light reaching Earth left the body some 13.6 billion years ago, making it the most distant object ever detected.

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  2. Astronomy

    Something New on the Sun

    The sharpest visible-light images of the sun ever recorded are revealing puzzling, new features of sunspots, the dark regions where the sun's powerful magnetic field is concentrated.

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  3. 19153

    Your article describes the economic and environmental costs of semiconductor chips. Interestingly, the impacts on the environment are very similar for the manufacture of solar cells. Many environmentalists place such unrealistic expectations on solar cell energy that they overlook certain facts.