Scientists are grappling with a cosmic mystery: why does the Universe behave differently on massive scales compared to our own solar system? While distant galaxies reveal clear signs of something bending the rules of gravity—often attributed to dark energy or a hidden “fifth force”—everything nearby seems to follow Einstein’s playbook perfectly.
Science, Volume 393, Issue 6808, Page 300-305, July 2026. Originally published at www.science.org by Rafael Marcé, Daniel Diaz de-Quijano, Sofía Rodríguez-Gómez, Enrique Moreno-Ostos, Makhambet Mukhtar, […]