An optical illusion is a visual phenomenon where our perception of thinking about an image differs from objective reality. This image is seen as a motion or spiral optical illusion (specifically a ...

An Australian-led study has provided new insight into the behaviour of rotating superfluids. A defining feature of superfluids is that they exhibit quantised vortices – they can only rotate with one, ...

It may sound unbelievable, but new research suggests that instead of being featureless, dark matter could actually behave like a cosmic superfluid, forming swirling vortex lines and stable rotating ...