'Water Worlds' Are Common In Milky Way, Says Research. So Why Not In The Solar System?

New research into data on exoplanets suggests that 'super-Earths' and water-rich 'sub-Neptunes' between two and four times bigger than Earth are likely to be water worlds containing at least 25% water-dominated ices or fluids, and not the gas dwarfs with a rocky core than many astronomers thought.
Read more: https://www.forbes.com/sites/jamiecartereurope/2019/04/29/water-worlds-are-common-in-milky-way-says-research-so-why-not-in-the-solar-system/?source=Snapzu