Busting the Chameleon: Scientists Find No Evidence for a Fifth Fundamental Force
Busting the Chameleon: Scientists Find No Evidence for a Fifth Fundamental Force The hunt for dark energy, the mysterious force accelerating the expansion of the universe, has led scientists down many intriguing paths. One promising candidate was the “chameleon force,” a hypothetical fifth fundamental force whose strength would vary depending on the density of matter. This chameleon-like behavior made it incredibly difficult to detect. Now, a groundbreaking experiment led by He Jian-hua at Nanjing University in China has delivered the…