... Credit Copyright: David Malin , UK Schmidt Telescope , AAO Explanation: The flowing trails of dust toward Corona Australis , the constellation of the Southern Crown , are visible here because not because they glow, but because they absorb and reflect . The dust appears bluer when seen near bright stars because it preferentially reflects blue light. ... These knots indicate molecular clouds filled with cool gas where future stars will likely form. ... NGC 4372 and the Dark Doodad . ...