Some Stars Are Born From Fluffy Clouds in the Early Universe

Images from ALMA telescope provide insight to the earlier years of our universe.

By Paul Smaglik
Feb 20, 2025 6:20 PMFeb 20, 2025 6:17 PM
Molecular clouds in the Small Magellanic Cloud
A far infrared image of the Small Magellanic Cloud as observed by the European Space Agency's (ESA) Herschel Space Observatory. Circles indicate the positions observed by the ALMA telescope, with the corresponding enlarged image of the observed molecular cloud from radio waves emitted by carbon monoxide. The enlarged pictures framed in yellow indicate filamentary structures. The pictures in the blue frame indicate fluffy shapes. (Credit: ALMA (ESO/NAOJ/NRAO), Tokuda et al., ESA/Herschel)

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The song “Little Fluffy Clouds” was a breakout hit during the dawn of techno music. Turns out, it may also be an apt description of stellar nurseries — the birthplace of stars.

These nurseries contain high concentrations of gas and dust and are also called molecular clouds. A study now provides evidence that some stars may have been born from some fluffy versions of these clouds in the early years of our universe, they report in The Astrophysical Journal.

“Even today our understanding of star formation is still developing, comprehending how stars formed in the earlier universe is even more challenging,” Kazuki Tokuda, a research fellow at Kyusha University and an author of the study, said in a press release.

Stars Dancing into Formation

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