This paper reports the discovery of the morphologically mature galaxy JADES-GS+53.18343-27.79097, existing within the first 700 million years of the Universe. This star-forming galaxy comprises three components: a compact core, an actively star-forming disc, and a star-forming clump, each exhibiting distinct star-formation histories. The galaxy's high central stellar mass density and the radial profile of its specific star-formation rate, which rises towards the outskirts, suggest inside-out growth.

William M. Baker, Sandro Tacchella, Benjamin D. Johnson, Erica Nelson, Katherine A. Suess, Francesco D’Eugenio, Mirko Curti, Anna de Graaff, Zhiyuan Ji, Roberto Maiolino, Brant Robertson, Jan Scholtz, Stacey Alberts, Santiago Arribas, Kristan Boyett, Andrew J. Bunker, Stefano Carniani, Emma Curtis-Lake, A. Lola Danhaive, Christa DeCoursey, Eiichi Egami, Stephane Charlot, Zuyi Chen, Jacopo Chevallard, Nimisha Kumari, Tobias J. Looser, Michael V. Maseda, Jakob M. Helton, Daniel J. Eisenstein, Ryan Endsley, Ryan Hausen, Dávid Puskás, Marcia Rieke, Lester Sandles, Fengwu Sun, Hannah Übler, Christina C. Williams, Christopher N. A. Willmer, Joris Witstok