SL7 is a dark nebula, a region of space so dense with interstellar dust that it obscures the light from stars and other objects behind it. Located in the Milky Way, dark nebulae like SL7 are fascinating to astronomers because they are the birthplaces of stars. These dense molecular clouds provide the raw materials for star formation, with gravity pulling the gas and dust together until nuclear fusion ignites a new star.

In this image, the dense, dark silhouette of SL7 stands out against the backdrop of the Milky Way, blocking the light from more distant stars. The intricate structures and variations in density within the nebula are visible, offering a glimpse into the complex processes at play in these stellar nurseries. Observing and studying dark nebulae like SL7 helps astronomers understand the early stages of star formation and the conditions that lead to the birth of stars and planetary systems.