According to reports posted this week on News.com, Nexus Newsfeed and Unexplained Mysteries.com, our earthly scientists seem to be catching on:
NEWS HEADING
Planetary scientist Alan Stern has suggested that some civilizations may live below a planet's surface.
Speaking at a recent meeting of the American Astronomical Society's Division for Planetary Sciences, Stern, who is the principal investigator of the New Horizons Pluto mission, put forward one possible explanation for why we have yet to encounter intelligent extraterrestrials.
Image credit: https://nexusnewsfeed.com/article/science-futures/some-civilizations-may-live-below-a-planet-s-surface/