Scientists may have finally caught “empty” space changing light

A magnetar with an astonishingly powerful magnetic field may have revealed a quantum effect predicted by Werner Heisenberg nearly 90 years ago. Its light shows signs that supposedly empty space is altering how the light travels, potentially providing the first evidence of vacuum birefringence. Scientists may have finally caught “empty” space changing light.

Scientists may have finally caught “empty” space changing light | Science News from research organizations Scientists may have finally caught “empty” space changing light Date: August 26, 2026 Source: Universe Today Summary: A magnetar with an astonishingly powerful magnetic field may have revealed a quantum effect predicted by Werner Heisenberg nearly 90 years ago. Share: Facebook Twitter Pinterest LinkedIN Email FULL STORY A Swinburne astronomer may have just confirmed one of the quirkiest aspects of quantum mechanics: that seemingly empty space can alter the behavior of light. Credit: NASA/Pablo Garcia Nearly 90 years ago, Werner Heisenberg predicted a strange quantum effect known as vacuum birefringence, in which seemingly empty space can change the way light behaves.

According to the idea, even a perfect vacuum is not truly empty. Instead, it should contain "virtual particles" that briefly appear and disappear. Despite major advances in nuclear physics since the 1930s and decades of work with particle accelerators, scientists have not been able to conclusively confirm the effect.

Now, observations of one of the most extreme objects in the Universe may provide the evidence researchers have been seeking.