The behavior of a particle changes depending on whether or not someone's looking at it. This is a well known theory in quantum physics.

It demonstrates that reality is an illusion and it only exists if we're looking at it. That's a pretty mind-blowing theory right there.

Physicists at the Australian National University have stumbled upon further evidence for this theory.

They recreated the John Wheeler's Delayed-Chocie Experiment and found that reality doesn't in fact exist until it's been measured.

At least on the atomic scale.