# Milky Way's disk grew 'upside down,' with younger stars forming in ever-thinner layers

> **Open Intelligence Dossier** · First detected: 2026-10-26 13:20 UTC · Category: Science

## Executive Summary
Recent astronomical studies reveal the Milky Way's disk grew upside down, flattening from a thick, turbulent shape over billions of years.

## Intelligence Brief
Recent reporting across multiple science publications details new findings regarding the structural evolution of our galaxy. According to coverage from outlets including Phys.org, Tech Times, Universe Space Tech, Martin Cid Magazine, and Inshorts, a new study reveals that the Milky Way grew in an upside-down manner. The research shows that younger stars form in ever-thinner layers within the galactic structure. Specific details highlighted in the coverage indicate that the Milky Way's disk was originally born thick.


It reportedly took three billion years for this thick structure to fully flatten. Additional coverage from Universe Space Tech notes that this transition into a flat shape occurred across two distinct stages, shifting the system from an initial turbulent disk into a thin spiral galaxy. To uncover these details, the research team utilized data gathered by the Gaia Space Observatory. This observational data forms the empirical foundation for understanding how the galaxy changed over time.


The studies examine the physical transformation of stellar groupings and the changing spatial distribution of stars within the galactic disk across its long developmental history. Coverage does not yet specify the full theoretical implications for future astronomical models or name the individual lead researchers involved beyond mentioning the collective team. Readers and observers will need to watch for subsequent publications from the Gaia data teams or academic journals to see how these conclusions regarding the two-stage flattening process are further tested and refined.

## Multi-Source Evidence Table
| Source Outlet | Headline | Verification URL |
|---|---|---|
| Martin Cid Magazine | The Milky Way’s disk was born thick and took 3 billion years to flatten | [Source Link](https://news.google.com/rss/articles/CBMikwFBVV95cUxNYTkySjBZdWhzVWUtcGVyY2lSY2ZWdWVvb2hOQnk0YXZxRUZocUcteXhsQ3h3cUtkTEZxanAzRmFUOUFVTnhlTzFqSFAyeUU2dmtUNXR5WUtoWF9lNFdiak5selZMakQ3dTRHc2RGckx0X2h6cVY3YlVkbVZramI5dmNoSGY1VlB0WjBhRzVJeDZMZ1E?oc=5) |
| Universe Space Tech | The Milky Way’s disk took on a flat shape in two stages | [Source Link](https://news.google.com/rss/articles/CBMikAFBVV95cUxQWGcwM3VVTFY2b1p5WWJaRXhkNWdhWmhOM1ROUnI1d2NvZ3hSV081TFhCRUhaOG9OMFAyS1JaNHdZZmQzVTJYbFd4LW1XUk1QWjQ2UjY3SF9lblNrWmVNWFFIM005MFd1aFdPeHdWb3R4RldUcEtKZExvY2hISnRtbE5Nd1kxMjFIZmlqMGZTUHM?oc=5) |
| Tech Times | New Study Reveals How the Milky Way Changed From Turbulent Disk to Thin Spiral Galaxy | [Source Link](https://news.google.com/rss/articles/CBMixwFBVV95cUxOSjU2S0I0cWlHMkNrRWs3UjA4bmNXQWMtcDdBTUZiTzhxel9nY2tMTkZTZ2VSM2taazhObjkyYWJqTkhEQ21JNFUtZ0ZLTXlNWVlwQWlzR0RBbmdWaVBWOXQteFpuOGFoRXpKS2lTZFJIbU1jWjFldFE2WG1NRHNLbVJDRXlTRU5QX3lxZU9vSTR0OXJXYUFQaWxMN09YQ25hWTROSzNDXzVSc3FSWUdsUlBvYVpwakxrOXQ2TmM2UnU4bUl1cThr?oc=5) |
| Inshorts | Milky Way's disk grew 'upside down': Study - The team used data from Gaia Space Observatory - Inshorts | [Source Link](https://news.google.com/rss/articles/CBMijgFBVV95cUxPOUJTNm9sVVRQdTgwZS1DNldUM283R0QwSXdfX2hKOTRlcWJjV21XeGN5RE9zR2VrWGJYRExSeEljbUNoTVZRc2lCZFVaS2FKbzFGNUxIa3JOZk9EdWg5OFhBTEdhOUVKV0t1NG5qc056ckJkTXZtZUlYblpJV0JuRXFUTjM3UXdRRGlKWjln0gGTAUFVX3lxTE5IMzNLSEpJQk9jTU03RkEyYURkQ0dVbW44YjFMcGtxQ3pXV0k1NmZWVUxWbUgyZGhJbVZGN2FuT3VpX1h5eUdPWTNhdjlpOWtyZmgtQXFFX3FXUzV2cU5OWmJZUVk4bW1NX0VfMVZXMUNGNVRiS215cUJVLUJkSENuOXRlRm9wSHZzbDZKaXV0QjZPRQ?oc=5) |
| Phys.org | Milky Way's disk grew 'upside down,' with younger stars forming in ever-thinner layers | [Source Link](https://news.google.com/rss/articles/CBMic0FVX3lxTE9nRHF3a3BrLUtuYXdseUh3RXdwZGZkNzk1TG1zc1JETDNSTFBfNHZSeGJDWFRBR1BVV0dIOTdZNlBjSHpBTnY0c0FhMVU1OENDei1iVndrcGZhWVRkS29PVFNfZ2hDZkhQZlZJOElqRW5GT2s?oc=5) |

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*Canonical Source: https://pulse.byoviral.com/trend/2026-10-26/milky-way-s-disk-grew-upside-down-with-younger-stars-forming-in-ever-thinner*