The Monkey Head Nebula (NGC 2174) is an emission nebula in the constellation Orion, approximately 6,400 light-years from Earth. It surrounds the young open cluster NGC 2175, whose hot, massive stars ionize the hydrogen gas, causing the nebula to glow with reddish hues. The region is rich in gas and dust, where active star formation is taking place, giving rise to bright knots and dark filaments within the cloud. The nickname “Monkey Head” comes from its resemblance in wide-field images, where the nebula’s curves and cavities trace out a face-like shape. NGC 2174 spans about 40 light-years across and is part of a larger complex of molecular clouds in Orion. Its sculpted features are a result of stellar winds and radiation carving cavities and triggering new waves of star formation along its edges.