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The original was posted on /r/space by /u/umichnews on 2025-07-16 16:36:53+00:00.

Original Title: Using JWST and ALMA, an international research team, including astronomers from the University of Michigan, detected silicon monoxide condensing into solids around baby star HOPS-315—the earliest direct evidence of planetesimal formation ever observed outside our solar system.

I’ve linked to the press release in the above post. For those interested, here’s the study: Refractory solid condensation detected in an embedded protoplanetary disk (DOI: 10.1038/s41586-025-09163-z)