What if we could open a portal to a parallel universe? Last year, there was a lot of media coverage on NASA scientists detecting a parallel universe. Is the assertion correct?

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#Parallel universes. If you are a fan of the Marvel Cinematic #Universe you must have heard about this term already.
Just the thought of a parallel universe could spark our crazy imaginations. People could be transported from one to the other, enabling us to live in a universe that's presumably better, than our own. Does that sound too good to be true? Well, last year there was a lot of media coverage on a #NASA scientist detecting a parallel universe.

And in general, this is what they claim.
“At the moment of the Big Bang two universes were formed – ours, and another one that from our perspective is running in reverse.”
I wanna don’t blame you if this sounds straight out of a scifi movie. So, let’s ask the question, is it true that there’s a parallel universe where time runs backward? Well today, we’re going to explore that, and beyond.

Let’s take a look at the concept of parallel universes a little bit closer.
From a physics point of view, parallel universes are one of those intriguing ideas that sounds imaginative, but very difficult to test. This concept of parallel universes arises in physics from the idea of the multiverse. We’ve covered this topic in great detail in this video, so make sure to check it out.

According to the cyclic model of the universe, the big bang itself wasn't the very beginning. There was a very different phase of the Universe that occurred previously to set up and give rise to the Big Bang. This is called cosmological inflation. When and where inflation ends, a Big Bang occurs.
But what is even the point of talking about this? After all, we're stuck in our own universe, and maybe.. there’s no way to test this idea about parallel universes. Because in all the experiments that scientists have ever performed, they’ve never found any strange interaction that requires something outside of the governing physics to explain.

For example, particles don't simply appear, disappear, or transform. They can only interact with other quanta of matter and energy. We live in a universe that is being governed by the law of physics. So, every interaction of particles must be uniformly governed by the same law.
And you might be wondering why I bring this up. Well, there’s actually a link between this example, and the media hype on the evidence of parallel universes. So let’s get to it.

It appears that the claim about the evidence of parallel universes started from an article posted by New Scientist. Their headline was “We may have spotted a parallel universe going backwards in time”. In all fairness, the post is backed-up by a thought-provoking article about some puzzling results from an experiment conducted in Antarctica. So before we go any deeper, let’s first understand how the whole experiment works.

The Antarctic Impulsive Transient Antenna, or ANITA, conducted a long-term helium balloon experiment. It is designed to detect radio signals generated by ultra-high energy neutrinos and cosmic rays. This helium balloon is flying over Antarctica, at the height of thirty seven thousand meters.
Neutrinos, which are subatomic particles similar to electrons, have no electrical charge and sometimes considered massless. These particles are abundant in the universe and they are very hard to detect. Even now, scientists have estimated that millions of neutrinos are passing through every centimeter square of our skin, without leaving any clue. The main source of Neutrinos are stars and in our case, it is the Sun.

But when a very high energy neutrino particle passes through matter, they do interact with the matter and their interaction generates radio waves. If we can detect these radio waves, we can tell what kind of neutrino-interaction it was, and through the direction of those radio waves, we can find from where those neutrinos were coming from.

In 2016, ANITA made a very strange discovery. Usually when neutrinos are detected, they come from outer space, because that is where the source lies. But, during ANITA's flight in 2016, it detected Neutrinos that were not coming from space. Instead, it was coming from Earth.

Let me make it clearer for you. A neutrino can pass through Earth without interacting with it, but when it comes to high energy neutrinos, they do interact with matter. During their collision with atoms, they produce some particles and radio waves. So, if highly energetic neutrinos do pass through the earth, they would interact with the Earth.