The Triangulum Galaxy: Wavelengths of Light Views | ESO
This video shows a portion of the Triangulum Galaxy, also known as Messier 33, at distinct colors or wavelengths of light. The data were taken with the MUSE instrument at the European Southern Observatory’s Very Large Telescope (VLT) in Chile, and it shows complex filamentary clouds within this galaxy.
MUSE decomposes the incoming light from astronomical sources into its constituent colors, but it does so at every single point within its field of view. In other words, it allows us to image astronomical objects at thousands of colors simultaneously.
As the video scans through the dataset, the galaxy lights up at specific wavelengths where certain atoms like hydrogen, oxygen or sulphur shine brightly. These observations allow astronomers to map the distribution of chemical elements in great detail, and to better understand the interactions between these gas clouds and the stars that form within them.
Release Date: March 23, 2026
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