Astronomers identified two remarkably low-density, inflated planets TOI-1927 b and TOI-2643 b

22. 12. 2025

Astronomers identified two remarkably low-density, inflated planets TOI-1927 b and TOI-2643 b

Star system: TOI-1927 | Distance from the Sun: 1044 light years

TOI-1927 b and TOI-2643 b are the first puffy planets known to orbit stars in thick disc of the Milky Way. This is highly unexpected in such metal-poor environment of our galaxy.

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Stars mentioned

TOI-1927

K0V, Orange star

mass: 0.8 M☉

radius: 0.7 R☉

distance: 1044 ly

stars in the system: 1

exoplanets: 1

TOI-2643

Subgiant

mass: 1.12 M☉

radius: 3 R☉

distance: 2011 ly

stars in the system: 1

exoplanets: 1

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