Massive rocky worlds orbiting their sun in only a few days may be the leftover cores of gas giants that moved in from the outskirts of a planetary system.
Source: Hot Earths may be stripped-down Jupiters
Rod Washington: Rod is a blogger, writer, filmmaker, photographer, daydreamer who likes to cook. Rod produces and directs the web series, CUPIC: Diary of an Investigator. He also produces news and documentary video projects. Check out his podcast StoriesThisMoment at https://m3e.d71.myftpupload.com/stm-tncn-podcasts/