What if the universe was made of antimatter? Well, things would be pretty wild! Antimatter is like a mirror image of regular matter, and if it touched normal matter, they’d both explode in a burst of energy. So, if everything in the universe was antimatter, we’d never notice a difference because all the rules would still work the same, but we'd have to avoid any regular matter. The biggest issue is if even a tiny bit of normal matter showed up, it would cause a massive blast. Luckily, our universe is mostly matter, so we don't have to worry about that happening! It's fun to imagine, though, how a whole antimatter universe could exist somewhere else, far away. Credit: CMB Timeline300: by NASA / WMAP Science Team https://map.gsfc.nasa.gov/media/060915/index.html https://en.wikipedia.org/wiki/File:CMB_Timeline300_no_WMAP.jpg Galaxies of the Infrared Sky: by 2MASS / T. H. Jarrett, J. Carpenter, & R. Hurt https://commons.wikimedia.org/wiki/File:Galaxies_of_the_Infrared_Sky_.jpg https://www.ipac.caltech.edu/2mass/gallery/showcase/allsky_gal_col/index.html Animation is created by Bright Side. ---------------------------------------------------------------------------------------- Music by Epidemic Sound https://www.epidemicsound.com Check our Bright Side podcast on Spotify and leave a positive review! https://open.spotify.com/show/0hUkPxD34jRLrMrJux4VxV Subscribe to Bright Side: https://goo.gl/rQTJZz ---------------------------------------------------------------------------------------- Our Social Media: Facebook: https://www.facebook.com/brightside Instagram: https://www.instagram.com/brightside.official TikTok: https://www.tiktok.com/@brightside.official?lang=en Stock materials (photos, footages and other): https://www.depositphotos.com https://www.shutterstock.com https://www.eastnews.ru ---------------------------------------------------------------------------------------- For more videos and articles visit: http://www.brightside.me
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00:00Imagine a universe made of antimatter.
00:04In this alternate reality, the building blocks of matter are made up of particles with opposite charges,
00:10creating a strange and wondrous world.
00:13What would it look like?
00:15Would the laws of physics be inverted?
00:17Would time run backwards?
00:19Buckle up and let's find out!
00:21First off, let's figure out what antimatter is.
00:25We know that our universe is composed of matter.
00:28Matter is made up of tiny particles, called atoms.
00:32These atoms are made up of protons, neutrons, and electrons,
00:36which together form matter and make up everything around us and what we're all made of.
00:41Antimatter, on the other hand, is just like regular matter, but the opposite.
00:46Just like how superheroes have opposite powers from their villains,
00:50antimatter has opposite properties from regular matter.
00:54So, while regular matter has protons with positive charges,
00:58antimatter has antiprotons with negative charges.
01:02Instead of electrons, we have positrons, and instead of neutrinos, we have antineutrinos.
01:08It's like the mirror image of everything we're familiar with.
01:13Now, here's an interesting part.
01:15When an antimatter particle and a matter particle collide,
01:19they annihilate each other and release a huge amount of energy.
01:23This is both a benefit and a drawback.
01:26On one hand, because of this property, studying antimatter is very difficult and expensive.
01:32We have to be very careful to ensure that antiparticles don't come into contact with ordinary atoms
01:39and don't annihilate each other.
01:41On the other hand, the huge amount of energy they release could revolutionize our lives.
01:46Perhaps one day, we'll start using them in propulsion systems for space travel.
01:51Imagine how amazing that would be!
01:55Scientists suggest that at the beginning of the creation of our universe,
01:59immediately after the Big Bang, matter and antimatter were equal.
02:04But this raises the question, where did the antimatter go?
02:08If they were truly equal, our universe would have been instantly destroyed before it could have been formed.
02:15Particles and antiparticles would have annihilated each other.
02:19Unfortunately, scientists themselves are not sure.
02:23They have a theory that the laws of physics were slightly different in the early universe,
02:27leading to an imbalance between matter and antimatter.
02:31So, after the Big Bang, particles and antiparticles began to mutually annihilate each other.
02:38However, for some reason, antimatter started to disappear.
02:42In the end, matter won.
02:44This process led to the creation of our universe.
02:48In the science world, it's known as baryogenesis.
02:52However, there are also scientists who offer more grandiose ideas.
02:58For example, a team of Canadian scientists from the Perimeter Institute for Theoretical Physics,
03:03led by Neil Turok, have proposed their own theory.
03:07They suggest that two universes were born at the moment of the Big Bang,
03:11our universe and a parallel one, consisting of antimatter.
03:16This is where all the antimatter has gone.
03:19According to this theory, at the time of the Big Bang, two universes were born,
03:23and then they separated.
03:25As the distance between these universes grew,
03:28the interaction between particles and antiparticles became weaker and weaker,
03:33until matter won in our universe and antimatter in the other.
03:38But, the most important question is,
03:41what would this mysterious universe made up of antimatter look like?
03:46You may imagine a universe where everything is flipped.
03:50The stars shine with an eerie blue light instead of yellow.
03:54Buildings are made of glass that reflects light in the opposite direction.
03:58And laws of physics work in the opposite way.
04:01After all, antimatter has the opposite charge of normal matter.
04:05So, isn't that logical?
04:07However, it's not that simple.
04:11Initially, scientists believed that this universe could be identical to ours in everything,
04:17all due to a property that used to be known as C-P symmetry.
04:22The C stands for Charged Symmetry,
04:25and means that each elementary particle has a twin with an opposite charge.
04:30The P stands for Parity Symmetry, meaning the symmetry of space,
04:35That is, all three directions in our world have opposite directions in the alternate universe.
04:41This basically means something like,
04:44laws of physics are the same no matter what the location is and what type of particle is being considered.
04:50So, if you were to run the laws of physics in reverse,
04:54or in a different location, or with different particles,
04:57the results should be the same.
05:00In simple words, scientists initially assumed that the universe of antimatter would be a mirror image of ours.
05:07It would be a pretty boring world where everything would be exactly the same as here.
05:12But, in the 1950s, scientists were mind-blown by an unexpected discovery.
05:18Neither of these symmetries held true.
05:21For example, if you take a piece of cobalt-60,
05:24it will emit particles that spin in one direction.
05:28But if you take the opposite of cobalt-60,
05:31the particles it emits will spin in the opposite direction,
05:35but they were expected to spin in the same direction.
05:38So what's going on here?
05:40Basically, it turned out that CP symmetry didn't work for certain weak nuclear reactions.
05:47The weak nuclear force is just weird like that, I suppose.
05:51This observation puzzled scientists for years.
05:55And then, they finally figured out how to solve this mystery.
05:59They added another letter to CP symmetry,
06:02T, which stands for time-reversal symmetry.
06:06This means that the antimatter universe, time, must flow from the future to the past.
06:12In this case, the CPT property held true,
06:16so it turns out that the antimatter universe would be a mirror image of our universe,
06:21but with time flowing in the opposite direction.
06:25So, there may be a version of you in this antiverse,
06:29watching this video on your upside-down computer,
06:32already knowing the ending.
06:34Isn't that crazy?
06:36So, although this universe would look similar to ours,
06:40it would also be fundamentally different.
06:43In this world, things would unravel instead of coming together.
06:47For example, broken objects would come back together to form whole objects.
06:52People would age in reverse, like Benjamin Button,
06:55and apples would fly up from Newton's head back to the tree.
07:00This, of course, is all purely hypothetical.
07:03It's very difficult for us to imagine a world where time flows backwards.
07:08We can only imagine how surreal this inverted reality would look like.
07:12But this is what the data suggests for now.
07:15There might be something we don't know yet that would make the antimatter world different.
07:20But as far as we know today,
07:22it seems this is what a mirror world made of antimatter would look like.
07:27Scientists are still studying antimatter and its properties.
07:31Understanding these properties is important for a number of reasons.
07:35First of all, it gives us a better understanding of the universe and its origins.
07:40The imbalance between matter and antimatter in our world is one of the biggest mysteries in physics.
07:46Studying antimatter can help us understand why this is the case.
07:51Second, it would give us a better understanding of particle physics and subatomic particles.
07:57This knowledge can help us unlock the secrets of the universe and make new discoveries in physics.
08:03And, of course, let's not forget about all the possible technological advancements.
08:09Antimatter has the potential to be used as a source of fuel for future space missions and other technologies.
08:15We could use this in propulsion systems to travel from planet to planet.
08:20We could also use antimatter in medicine, for example, for cancer treatment.
08:25Also, in medical imaging, antimatter particles can be used to produce high-resolution images of the inside of the body,
08:32giving doctors a better view of what's going on.
08:36So, in other words, understanding the properties of antimatter is very important for science.
08:42It's a fascinating field of study that has the potential to unlock some of the biggest secrets in the universe.
08:49A universe made of antimatter would be a fascinating place.
08:53It would be very interesting to visit there and see how everything works.
08:58And the true nature of an antimatter universe remains a mystery, waiting to be explored and understood.
09:04But let's hope that we'll figure these mysteries out in the future!