What is the smallest known planet?

[Admin]

Although Kepler 37-b has held the title of "smallest planet" for over a decade, it won't hold that designation forever.

What is the smallest known planet? : Read more

 

[rod]

SDSS J1228+1040 b, Kepler-391 b, and Kepler-37 b show radii 0.29 earth radii size or a bit smaller at https://exoplanet.eu/home/, there are 281 shown with radii 1.1 or smaller earth size.

Kepler-37 b is the smallest using radii average size for this site, https://exoplanetarchive.ipac.caltech.edu/index.html, 273 exoplanets listed here with average radii sizes 1.1 earth size or smaller.