Planets
NASA's Kepler mission have detected two Earth-sized planets orbiting a distant star
Astronomers using NASA's Kepler mission have detected two Earth-sized planets orbiting a distant star. This discovery marks a milestone in the hunt for alien worlds, since it brings scientists one step closer to their ultimate goal of finding a twin Earth. ...
Skin can "see" ultraviolet light
Biologists have discovered that skin cells containing melanin (melanocytes) detects UVA radiation using photosensitive receptors that previously thought only exist in the retina. New research shows that this skin's ability to perceive light initiate melanin production within a couple of hours, in order to protect DNA from sun damage. ...
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