Vast swarms of hidden galaxies may be secretly bathing the universe in a soft glow

image via Space.com

April 17, 2025, 9:00 AM

• •Astronomers have discovered a population of hidden galaxies that are contributing to the far-infrared background of the cosmos.
• •The galaxies were found using data from the Herschel Space Observatory.
• •The galaxies are likely to be dusty, star-forming galaxies that are at a range of distances from us.

Astronomers have discovered a population of hidden galaxies that are thought to be responsible for a large portion of the far-infrared light in the universe. The galaxies are so dusty that they are difficult to see at visible wavelengths, but they can be detected by their far-infrared emission. The discovery was made using data from the Herschel Space Observatory.

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