The OWL Nebula
The Owl Nebula is a planetary nebula located approximately 2,030 light years away in the constellation Ursa Major.This object is known by the catalogue identifiers Messier Object 97 (M97) and NGC 3587. It was discovered by French astronomer Pierre Méchain on February 16, 1781 When William Parsons, 3rd Earl of Rosse observed the nebula in 1848, his hand-drawn illustration resembled an owl's head. It has been known as the owl nebula ever since.
M16, The Eagle Nebula
Evidence from the Spitzer Space Telescope suggests that the pillars in M16 may already have been destroyed by a supernova explosion. Due to the distance of the nebula, the light from the supernova would have reached Earth between 1000 and 2000 years ago. The more slowly moving shock wave from the supernova light showing us the destruction will not reach the Earth for another millennium.