is it possible to have a planet bigger than its star in the same system?
from what i could find in research, the smallest star we know of (EBLM J0555−57Ab) has a jovian radius of about 0.82, with fluctuations reading as large at 0.95. to my understanding, this means that this star at its biggest is still smaller than some planets discovered, but im curious of its possible for a "mega-planet" in this case to exist in the same system as such a small star.
then, follow up question, would it be possible to have a planet that has it's star orbiting it like old geocentric theories? and how would this effect seasons and the day/night cycle?