Image Attributions:
The Orion Nebula and cluster from the VLT Survey Telescope (https://www.flickr.com/photos/esoastronomy/36032866602/) - European Southern Observatory - License: Attribution (http://creativecommons.org/licenses/by/2.0/)
NEBULA
A nebula is cloud of dust and gas in space. The term nebula comes from the Latin for fog or cloud.