BEIJING, Aug. 15 -- Chinese researchers have identified widespread corrugated structures in the Milky Way for the first time, offering fresh observational evidence for understanding the galaxy's three-dimensional architecture and dynamic evolution.

The findings, from a team at the Purple Mountain Observatory (PMO) under the Chinese Academy of Sciences, were published on August 7 in the journal Nature Astronomy.

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Lead author Sun Yan, an associate researcher at PMO, stated the team analyzed over 30,000 molecular clouds in 3D using carbon monoxide (CO) spectral-line survey data. The sample covered about half of the Milky Way's outer disk, reaching up to 26 kiloparsecs from th...