Planets with orbital periods shorter than 1 day are rare and have formation histories that are not completely understood. Small (Rp<2R⊕) ultra-short-period (USP) planets are highly irradiated, probably have rocky […]
Planets with orbital periods shorter than 1 day are rare and have formation histories that are not completely understood. Small (Rp<2R⊕) ultra-short-period (USP) planets are highly irradiated, probably have rocky […]