Nebula | nebula | Crab Nebula | Cat's Eye Nebula | planetary nebula | Nebula Science Fiction | Nebula (band) | Nebula Award for Best Novella | Gum Nebula | Nebula Records | Nebula Award for Best Novelette | Homunculus Nebula | Detail of Peiresc's notes recording his first observation of the Orion Nebula | Carina Nebula | Boomerang Nebula | Artist's conception of OGLE-TR-10b with Lagoon Nebula |
In 1888, Fleming discovered the Horsehead Nebula on Harvard plate B2312, describing the bright nebula (later known as IC 434) as having "a semicircular indentation 5 minutes in diameter 30 minutes south of Zeta Orionis."