Astronomy Picture of the Day . The Solar Spectrum . ... It is still not known why the Sun's light is missing some colors. ... Saturn s Dragon Storm . ... Dubbed the "Dragon Storm", convoluted, swirling cloud features are tinted orange in this false-color, near-infrared image of Saturn's southern hemisphere. In one of a series of discoveries announced by Cassini researchers, the Dragon.. ... Oklo: Ancient African Nuclear Reactors . ... These reactors are thought to have occurred naturally. ...