The Omega Nebula, also known as M17 or the Swan Nebula, is a massive star-forming region located approximately 5,000 to 6,000 light-years away in the constellation Sagittarius. This bright emission nebula spans about 15 light-years and is one of the youngest and most active stellar nurseries in our galaxy. The nebula's characteristic swan-like shape is formed by the intense ultraviolet radiation from newly born, hot stars, which ionizes the surrounding hydrogen gas and causes it to glow brightly.

In addition to its striking appearance, the Omega Nebula is an important object of study for astronomers. Its dense clouds of gas and dust harbor the processes of star formation, providing insights into the early stages of stellar evolution. The region is also home to a rich cluster of young stars, including several massive O-type stars that are primarily responsible for the nebula's illumination. Observations in various wavelengths, from infrared to radio, have revealed intricate details of the nebula's structure, shedding light on the dynamic processes at play in this stellar nursery.