Neptune-sized exoplanet is too big for its host star

0x1C3B00DA@kbin.social to Space@kbin.social – 4 points –
arstechnica.com

Stars this small shouldn't make planets this big.

1

I find it interesting that they didn't suggest the possibility that came to my mind first: cannibalization. If it was small to start with, but in clearing the neighborhood, also was volcanic enough to absorb smaller planetoids, it might have absorbed them and grown.