NGC 2440 is a planetary nebula located in the constellation Puppis. It is approximately 4,000 light-years away from Earth and is known for its striking appearance, featuring a bright central star surrounded by intricate gas and dust structures. The nebula is notable for its complex morphology, which includes multiple shells and filaments. The central star, a hot white dwarf, is the remnant of a star that has shed its outer layers, creating the nebula. NGC 2440 is one of the most studied planetary nebulae due to its unique features and the insights it provides into stellar evolution.