description RCW 120 Overview
RCW 120 is a prominent emission nebula located within the constellation Scorpius. Part of the Milky Way’s southern region, it's notable for its distinctive bubble-like structure formed by ionized hydrogen gas (H II). This nebula, first documented in 1960, provides valuable insights into star formation and stellar winds, primarily studied by astronomers and researchers investigating galactic structures and processes.
help RCW 120 FAQ
Where is the RCW 120 nebula located in the night sky?
RCW 120 is located in the southern Milky Way, specifically within the boundaries of the constellation Scorpius. It is a prominent southern sky object that cannot be easily observed from most northern latitudes.
What causes the distinct bubble shape of the RCW 120 nebula?
The bubble shape is created by intense ultraviolet radiation and stellar winds from a massive, central O-type star. This radiation ionizes the surrounding hydrogen gas, sweeping it outward into a glowing ring-like structure known as an H II region.
Who is responsible for cataloging RCW 120, and what does its name mean?
The nebula was cataloged in 1960 by three astronomers named Rodgers, Campbell, and Whiteoak, which forms the "RCW" in its designation. They compiled a list of H-alpha emission regions in the southern Milky Way at the Mount Stromlo Observatory.
How far away is the RCW 120 nebula from Earth?
Astronomical observations, particularly from space telescopes, indicate that RCW 120 is located roughly 4,300 to 5,000 light-years away from our solar system. This distance places it within our local region of the Milky Way galaxy.
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