Comet and Orion . ... Credit Copyright: Rolando Ligustri ( CARA Project ) Explanation: These colorful panels both feature a familiar northern hemisphere astronomical sight: the stellar nursery known as the Great Orion Nebula . ... Comet 217P Linear sports an extended greenish tail and lies above the bluish Running Man reflection nebula near the top of both frames. ... In fact, the comet was a mere 5 light- minutes away on September 27, compared to 1,500 light-years for the Orion Nebula. ...