Either the Sun Is Getting Smaller or Gravity Is Getting Weaker
Paper discussion: Solar system expansion and strong equivalence principle as seen by the NASA MESSENGER mission. Antonio Genova, Erwan Mazarico, Sander Goossens, Frank G. Lemoine, Gregory A. Neumann, David E. Smith & Maria T. Zuber. Nature Communications volume 9, Article number: 289. Students of physics learn some interesting facts about the sun, spread over different lessons and…