This is a freakin' mind-blowing theory! Physicist Michio Kaku suggests dark matter may not be “matter” as we know it. Instead, it could be gravity leaking into our universe from a parallel dimension.
Kaku explains it like this: Imagine our universe is like a sheet of paper. Right above it (just inches away in higher dimensions) could be another parallel universe with its own galaxies.
Light is stuck to each “sheet,” so we can’t see that other galaxy. But gravity bends space itself and can leak between the sheets.
In this picture, an invisible galaxy in a nearby dimension would still have mass and gravity — we’d feel its pull but not see its light. That matches dark matter perfectly.
In his own words:
“Dark matter may be ordinary matter in a parallel universe… We would not be able to see it. It would be invisible, yet we would feel its gravity.”
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