(March 9, 2017 at 11:37 pm)vorlon13 Wrote: There is an entire category of common planets seen in the galaxy but not represented in our solar system, the so called 'super earths' and/or 'sub Neptunes'. Planets bigger than earth, and smaller than Neptune are turning up frequently in surveys of other stars, yet we have no local example at all.
How do we know they are qualitatively different from the ice giants of the solar system.


