Scientists reveal the mysterious reason they think we've received a signal from parallel universe

A group of scientists think they have evidence of a possible parallel universe.

Back in 2019, scientists detected what's known as a gravitational wave signal — and it left them stumped. For those of you who have no idea what these are (i.e myself), the waves are described as 'ripples in space-time caused by some of the most violent and energetic processes in the Universe', as per the Laser Interferometer Gravitational-Wave Observatory (LIGO).

This particular signal was identified as GW190521 and was believed to be caused by two black holes colliding. However, a team at the Chinese Academy of Sciences has suggested otherwise.

The group of researchers have recently published a paper titled 'Is GW190521 a gravitational wave echo of wormhole remnant from another universe?' that was submitted on September 9.

According to Futurism, the report is yet to be peer-reviewed.

Maybe Stranger Things was right about there being a parallel universe... (Netflix)

As per its title, the scientists have raised questions about whether GW190521 was really a result of black holes colliding.

They've since suggested that the wave signal travelled through a wormhole from a parallel universe.

Researchers write: "A particularly compelling aspect of the GW190521 event detected by the LIGO-Virgo collaboration is that it has an extremely short duration, and lacks a clearly identifiable inspiral phase usually observed in the binary black holes (BBHs) coalescence.

"In this work, we hypothesize that GW190521 might represent a single, isolated gravitational wave (GW) echo pulse from the wormhole, which is the postmerger remnant of BBHs in another universe and connected to our universe through a throat [of a wormhole]."

The 'throat' of a wormhole is the central part of the wormhole that creates a tunnel that allows a shortcut between two different places.

The group from the Chinese Academy of Sciences go on to say that while it's most likely that the wave was from a BBHs colliding, the evidence is 'not significant enough to rule out the possibility that the echo-for-wormhole model is a viable hypothesis for the GW190521 event'.

The idea of us living in a multiverse (no, not the Marvel one) has long been contemplated.

One person who believes that there's more than one universe is author and theoretical physicist Alexander Vilenkin.

Vilenkin argues that inflation didn't end everywhere at the same time and that cosmic inflation in fact continues in other places.

Our universe may not be the only one (Getty Stock Image)

Vilenkin said in Scientific American in 2011: "In our cosmic neighborhood, inflation ended 13.7 billion years ago, but it still continues in remote parts of the universe, and other 'normal' regions like ours are constantly being formed. The new regions appear as tiny, microscopic bubbles and immediately start to grow.

"The bubbles keep growing without bound; in the meantime, they are driven apart by the inflationary expansion, making room for more bubbles to form. This never-ending process is called eternal inflation.

"We live in one of the bubbles and can observe only a small part of it. No matter how fast we travel, we cannot catch up with the expanding boundaries of our bubble, so for all practical purposes we live in a self-contained bubble universe."