Why are Neptune-sized planets rare among exoplanets discovered to date? A ‘warm Neptune’ recently found by astronomers around a bright blue A-type star provides a clue. Astronomers have proposed that gas giants like Neptune would be stripped of their gas in close orbits around a star — the limited region current exoplanet-finding techniques are able to sample. The warm Neptune is just outside the Hot Neptune zone, providing evidence that the theory is correct.
Click here for original story, Brightest stars in the night sky can strip Neptune-sized planets to their rocky cores
Source: ScienceDaily