Why puffy exoplanets often dance with perfect rhythm

[Admin]

New research has identified two distinct populations of puffy, sub-Neptune exoplanets with low densities, allowing them to stay in step with their planetary siblings.

Why puffy exoplanets often dance with perfect rhythm : Read more

 

[rod]

Interesting report, I note the paper cited states, "1. Introduction Planets with radius in the 1–4 REarth range are estimated to exist within a hundred days of orbital period around 30 − 50% of all Sun-like stars (Lovis et al. 2009; Howard et al. 2012; Fressin et al. 2013). In order to understand the nature of these objects, it is crucial to constrain both their masses and radii, and, thus, their densities..."

This site shows 6683 confirmed exoplanets now, the list continues to grow nearly daily here. https://exoplanet.eu/home/

Selecting 1-4 earth radii size I find 3109 exoplanets listed. 4677 show radius parameter with mean 4.92 earth size. Quite a large population of exoplanets documented now to chew on