According to NASA, there is a green comet named Lulin approaching Earth. One astronomer calls it "a green beauty that could become visible to the naked eye any day now."
Named after the observatory in Taiwan where the discovery-photo was taken, Lulin makes its closest approach to Earth on Feb. 24, according to a NASA release. "Current estimates peg the maximum brightness at 4th or 5th magnitude, which means dark country skies would be required to see it. "No one can say for sure, however, because this appears to be Lulin's first visit to the inner solar system and its first exposure to intense sunlight." But surprises are possible!