An international team of space scientists has observed a “cold stream” of molecular gas outside of a galaxy, confirming theories of star formation within galaxies. In their study, published in the journal Science, the group used the array of radio telescopes at the Atacama Large Millimeter Array (ALMA) to focus on the stream and learn more about its nature. Caitlin Casey, an astronomer at the University of Texas, has published a Perspective piece on the work done by the team in the same journal issue.
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Source: Phys.org