The Real Dark Mirror of Our Universe + Other Unique Space Facts

Bright Side

Ever wondered what the real "dark mirror" of our universe is? Dive into a mind-blowing journey with us as we explore this mysterious concept and uncover some truly unique space facts that will leave you in awe. From the secrets of black holes to the wonders of distant galaxies, there's so much to discover! So, if you're ready to expand your knowledge and get lost in the cosmos, this is the video for you. Come join us and let's explore the universe together!

Transcript

00:00Ruh-roh, there might be another universe, like a dark mirror image of ours, where time flows in reverse.

00:08This flipped-over world might also be the source of dark matter, the invisible substance that's all over our universe.

00:15There might also be many more universes out there, in which an exact copy of you woke up this morning,

00:22but it chose a white t-shirt instead of a red one, sending it on a completely different life path.

00:29But let's start with this elusive dark matter.

00:32It makes up most of the universe's mass, yet we're not sure what exactly it does or where it comes from.

00:39That's because it doesn't act like regular matter.

00:42We can't see it or feel it, we just know it's there because of how it seems to bend gravity.

00:49Even though regular matter and dark matter are very different, they seem to exist in a balance.

00:55Some scientists think this must be connected somehow.

00:59A new theory suggests that, for every way regular matter moves, there's a mirror version of it in the world of dark matter,

01:07like a bridge connecting the two worlds.

01:10There's also a strange coincidence in regular matter where a neutron and a proton have almost the same weight.

01:17This allows them to stick together and make atoms stable, making everything that we can see with our eyes exist.

01:24If protons were a bit heavier, there would be no balance and atoms wouldn't form.

01:31In the dark mirror universe, maybe things happen differently.

01:35Maybe in there, the equivalent of a proton doesn't bind to other particles,

01:40leaving behind lonely neutrons, which could be the source of dark matter.

01:45This theory also suggests that dark matter might have its own chemistry,

01:49like dark atoms in a dark periodic table.

01:52For the longest time, scientists believed there was just one type of dark matter.

01:58Although these particles are similar in some ways, like being almost invisible,

02:02they may vary in their sizes, speeds, and how they affect regular matter.

02:08If this idea is right, it means there could have been interactions between our universe

02:13and the dark mirror universe in the past.

02:16Studying how elements formed in the early universe might give us clues about this.

02:22The idea of a flipped world has sparked curiosity and even some confusion in the scientific community in recent years.

02:31Astronomers use a theory called the Lambda-CDM model to explain the composition and behavior of our universe.

02:39According to Witt, most of the universe is made of two things, dark energy and dark matter.

02:45Dark energy is like the pushing force that makes the universe expand faster.

02:51Dark matter is this invisible thread that pulls things together with its gravity, acting like a universal glue.

02:58Regular objects, like stars, planets, and comets, only make up a small part of the mix.

03:05The model also tells us about the Big Bang, and how everything started from a hot, crowded beginning,

03:11and how the universe has been growing and changing ever since.

03:15While this model seems to be correct in many ways, it doesn't explain all cosmic phenomena.

03:21If you were to draw this model on a piece of paper, it would look like a series of flat pancakes stacked on top of one another.

03:31Each one of the pancakes represents a rendition of the universe at a certain point in time.

03:37Yesterday's universe would stand below that of today, but it would be a slightly smaller pancake.

03:42By the end, you'll see that the universe's history looks like this giant upside-down cone, with its minuscule tip being the Big Bang.

03:52Beyond this point, we can't see any further away in time with the tools we have.

03:58So, we don't know what's beyond.

04:00More so, we're still not even sure what happened immediately after the Big Bang.

04:05But, if we simply apply the math, the universe might go beyond this historical tipping point.

04:13Which could mean it could go in reverse, creating a similar mirrored cone where time would flow backwards, in our perspective at least.

04:23This alternative idea not only challenges our understanding of cosmic origins, but also raises questions about fundamental principles in physics.

04:33All the excitement around a mirrored universe also came from ANITA, a scientific instrument stationed in Antarctica and its discoveries.

04:43This device saw some weird high-energy particles seemingly bursting from beneath the Antarctic ice.

04:50The problem with these particles is that they didn't behave as the laws of physics dictate.

04:56Scientists think they have a type of cosmic rays.

04:59They travel from space, through the Earth, and back out again.

05:04But the particles we already know about shouldn't behave like that.

05:09That's because higher-energy particles usually collide with something inside the Earth and don't come out the other side like these do.

05:17They seem to be doing things both forward and backward.

05:21For now, there's no concrete proof of a mirrored universe.

05:25These particles could simply be ones we haven't discovered before.

05:29And scientists need to study them closely to come up with a definitive answer as to why they're behaving like this.

05:36Kind of like four-year-olds.

05:39But what if there isn't just one other universe, but many more?

05:44This multiverse concept comes from ideas like the inflation theory,

05:49which says that our world had this rapid expansion in its early stages.

05:53While inflation stopped in our neighborhood billions of years ago,

05:58it's likely that it continues in other regions of the multiverse,

06:02creating different universes with their own laws of physics and unique characteristics.

06:08Our universe is the only one that we know of that can support life.

06:12We have stable stars that can provide heat and warmth, for example,

06:17which is crucial for creatures to start moving around.

06:20We also have an abundance of elements, like carbon and hydrogen, which we also need to exist.

06:27The multiverse hypothesis gives an explanation for why our universe exhibits such life-friendly conditions.

06:34It may explain that there are countless other universes out there,

06:39with varying conditions, making the existence of life in at least one of them less likely.

06:45One fascinating implication of the multiverse theory is the idea of doppelgangers,

06:52these exact copies of individuals existing in parallel universes.

06:56This notion suggests that within the vast expanse of the multiverse,

07:01there could be infinite scenarios where identical versions of ourselves

07:06are experiencing similar events at the same time.

07:09Before we begin our travels to different universes altogether,

07:14we might need to understand our own.

07:17There's this galaxy, for instance, far from us, that might have no dark matter at all.

07:23It's about 250 million light-years away and looks normal at first glance.

07:29But if we look closer, we can't seem to find any dark matter.

07:33If it turns out that there are more galaxies like this one,

07:37it could change our ideas about how galaxies are made.

07:42Dark matter is usually thought to be necessary for this process,

07:46acting like the glue that holds the whole thing together.

07:49It is true, however, that this particular galaxy is more faint and has fewer stars than usual.

07:55When it was first discovered in 2019,

08:00scientists thought it might not have dark matter because of how fast it was spinning.

08:06The speed at which a galaxy spins tells us how much stuff there is in it.

08:11By comparing this speed with what we can see,

08:14astronomers can figure out how much extra stuff, like dark matter, must be there.

08:20And in this unique galaxy, the math says there isn't any.

08:24Among all these theories, there's also one that says dark matter might not be real at all.

08:32This new study proposes that maybe we've been looking for something that doesn't even exist.

08:38They think that our understanding of gravity might not be good enough

08:42to explain why some galaxies behave oddly.

08:45So instead of dark matter causing these weird behaviors,

08:49they say it might just be that we don't fully understand

08:53how regular matter works.

08:55They base these findings on a theory called modified Newtonian dynamics.

09:01It suggests that gravity behaves differently

09:03at very large distances or very low speeds.

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