The Cone Nebula

Copyright: Michael Gariepy/Adam Block/NOAO/AURA/NSF

Around 2600ly away in the constellation of Monoceros lies the Cone Nebula. The reason for its name is obvious - a 6 light year-long cone of dust, slowly being eroded by highly energetic hot blue stars in the nearby cluster.
Over time, the ultra-violet emissions from these stars will completely remove the column of dust and the Cone Nebula will be no more.
Find The Cone Nebula