So cool it’s got to be true:
The uncanny world on the other side of the mirror may not seem real to you. But Leah Broussard thinks parallel universes where everything is flipped might be very real indeed. Along with her colleagues at Oak Ridge National Laboratory in Tennessee, she is on the hunt for a universe that is identical to our own, but flipped so that it contains mirror atoms, mirror molecules, mirror stars and planets, and even mirror life. If it exists, it would form a bubble of reality nestling within the fabric of space and time alongside our own familiar universe, with some particles capable of switching between the two.Michael Brooks, “We’ve seen signs of a mirror-image universe that is touching our own” at New Scientist
Broussard is about to do tests to find out if it is true. That’s fun, of course, but in reality, no one can prove it false and it will therefore always be real when cosmologists need it.
It would be still more fun to see Sabine Hossenfelder tackle this one.
See also: Sabine Hossenfelder summarizes multiverse theories, asks: Science or fiction? But with respect to the simulation multiverse: Why could there not be countless, helplessly infinite, simulations of the simulations as well?
Physicists: A mirror universe might explain dark matter
Did Stephen Hawking Discover A Means Of Detecting Parallel Universes Just Before He Died? That sounds a lot like grief talking but we’ll see.
Claim: Evidence, maybe, for parallel universes
Cosmologist: Parallel Universes Are Pushing Physics Too Far?
Alternate parallel universe found. Maybe (2015)
Test parallel universes for real?
Parallel universes TESTED?
Brit mid-market tabloid says Large Hadron Collider within days of discovering parallel universe
Scientific American tells us we may live in the past of a parallel universe
and why this is supposed to be science.