A free-floating rogue planet the size of Saturn is the first to have its mass measured thanks to a lucky convergence of ground- and space-based telescopes

https://www.newscientist.com/article/2509858-rare-saturn-sized-rogue-planet-is-first-to-have-its-mass-measured/

2 Comments

  1. Obvious_Valuable_236 on

    “Mass is the main parameter deciding on the classification as a planet,” someone let the IAU know