Studying an atomic clock on-board a spacecraft inside the orbit of Mercury and very near to the Sun might be the trick to uncovering the nature of dark matter, suggests a new study published in Nature Astronomy. Dark matter makes up more than 80 percent of mass in the universe, but it has so far
A groundbreaking new study published insuggests that studying an atomic clock on a spacecraft orbiting close to the Sun, inside the orbit of Mercury, could be the key to unlocking the mysteries of dark matter. The research offers a potentially game-changing approach to understanding this elusive and enigmatic substance that is thought to make up much of the universe.
One important class of experimental searches are those using atoms or nuclei, because these have achieved incredible sensitivity to signals of dark matter. This is possible, in part, because when dark matter particles have very small masses, they induce oscillations in the very constants of nature. These oscillations, for example in the mass of the electron or the interaction strength of the electromagnetic force, modify the transition energies of atoms and nucleii in predictable ways.
“The more dark matter there is around the experiment, the larger these oscillations are, so the local density of dark matter matters a lot when analyzing the signal,” said Eby.
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