... The Swift View of Comet Lulin . ... But the comet's greenish glow , familiar to earthbound skygazers , is replaced by false colors in this premier view from the orbiting Swift satellite . ... The result maps remarkable x-ray emission on the comet's sunward side as incoming solar wind ions interact with gases in the swollen coma . ... The ultraviolet emission is from the OH molecule derived from the breakup of water, an indicator of the copius amounts of water produced by this extremely active comet ...