How often do stars collide? And what would happen if two stars collide? Stellar collisions occur about every 10,000 years and are an incredible spectacle. But they’re only fascinating to watch when they happen tens and hundreds of light-years away. If a star collides with our own Sun, it will be a global cataclysm that will leave no chance of survival to anything. If it happens, it will most likely involve a rogue star. These are stars that aren’t bound by gravity to any galaxy and move independently through space. And such a star has already paid a visit to our Solar System. To be more precise, two stars. About 70,000 years ago, they approached the boundary of our system. Humanity was already around at the time and probably began spreading worldwide from Africa. And they could have witnessed a dim red light in the night sky. And even though Scholz’s Star flew by us at a distance of about 0.8 light-years, its gravitational field strongly influenced the movement of different cosmic bodies. But what if such a star didn’t pass by, but went straight to the center of our Solar System — to the Sun? Scientists say this may happen. #brightside TIMESTAMPS:
What are rogue stars? 0:01
One of them is moving towards us 1:28
What will happen to the Earth? 2:25
A neutron star collision 3:40
How a black hole is born 4:47
What happens if two black holes collide? 5:29
Andromeda–Milky Way collision 6:12 Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
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More What Happens When Stars and Black Holes Meet Videos

Have you ever wondered what our life would be like if we lived in a 2D world instead of a 3D world? Imagine you and your friends decide to play a new board game. You roll the dice and get 5 and 3. Your pawn moves 8 spaces on the flat squares. The next morning, you wake up to…something bizarre. All you can see is…lines? There’s no height, no up or down. You try to move your head. You can’t see feet below you or a ceiling above you. Your view is limited to left and right. You try to jump – no luck. You can move, but only forward, backward, left, and right. You check out your room. There are no windows, just a line blocking you from going anywhere. The wall. You head to the right and left. As you approach objects, they get brighter. You finally find the door: a brown line you can push open. You’re a flat pawn and can't lift yourself from the board or climb on top of objects – you can only go around them. Your entire world is in 2D! #brightside Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
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More If You Lived in a Flat 2D World, Here’s What You’d Look Like Videos

What would happen if the Andromeda Galaxy collided with the Milky Way Galaxy? In 4.5 billion years, our entire Milky Way galaxy will experience an incredible incident. The Andromeda galaxy will hit us at great speed. As a result of the collision, some stars will be thrown into distant space, while others will form new solar systems. But most likely, all life in the new Milkomeda or Milkdromeda galaxy will cease to exist. But let's look to the future and find out what will happen to us people. Well, humanity decided it was time to leave the Earth, and now we live very far away in another galaxy. There can be an infinite number of planets in the Universe on which humans can theoretically live. One of the main requirements — the planet must orbit the star in its habitable zone. We find similar star systems almost every year, and have recently found the nearest one. It’s Proxima Centauri. There are at least two planets around this red dwarf on which we can build our new home. But the problem is that this system is as far as 4.2 light-years away… #brightside TIMESTAMPS:
The fastest human-made space object ever 1:45
We can travel faster than light?! 2:41
Lasers and ion propulsion 6:07
Colonization of Mars 7:28 Preview photo credit: Warp drive spacecraft, illustration: By GREGOIRE CIRADE/Science Photo Library/East News, https://www.eastnews.ru/pictures/picture/id/77735711/i/20/t/80
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More People Will Soon Travel to Other Galaxies, Here’s When Videos

And just like that, you clicked. See how we just told you not to do something, and you’re all hooked. Sure, you did it out of curiosity and sabotage, but that’s exactly the point. That’s just one of the many mind games other people and even your own brain plays on you. Psychological manipulation occurs when one person is used for the benefit of another. The manipulator deliberately creates an imbalance of power and exploits the victim to serve his or her agenda. Every manipulator targets a very precious part of you, your emotions. When you think with your brain, you make rational, solid choices. But manipulators don’t want you to do that. They want to shut down your mind and make you stop thinking rationally. Then, you’re driven by emotions that push you to do things you’d normally never do. If you don’t want to get caught in this trap, make sure you stop and think: “What’s in it for me? Do I really need it?”. But there are other ways of manipulating. Some of them make you believe that you need something to be happy. Making your own choices can be a little bit tricky… #brightside TIMESTAMPS:
What manipulators do to you 0:51
How ads manipulate our emotions 1:23
That girl on Instagram does the same 1:51
Confirmation bias 2:40
Test your skills! 3:55
Why you check the fridge 10 times a day 8:05 Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
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More Don’t Watch If You Can’t Handle the Truth Videos

We rarely think about how interesting and unique our bodies are. Did you know, for example, that no human being has truly black eyes? Or that if the human eye was a photo camera, its resolution would be about 576 megapixels? Or that a human produces from half a quart to 1 liter of saliva every day, depending on the person. That’s enough saliva in a year to fill a bathtub! Do you still think you know your own bodies perfectly? Okay, how about this? The only thing that makes our blood types different is… sugar, a human hair is stronger than the same diameter copper wire, our belly buttons have an entire zoo in them, with a range of about 70 different bacteria? Believe it or not, there are even more miracles in our bodies that can surprise us! Today, we invite you all to check out this compilation of facts about the human body – many of which we never speak about. #brightside Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
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More That’s Why People Don’t Have Black Eyes (Never Ever) Videos

In the world's deepest gold mines, people work at a depth of over 13,000 ft. The deepest oil well on the planet is located in the Russian Far East, it goes more than 40,000 feet down. It's fifteen Burj Khalifa towers put on top of each other. One of the world's deepest and most famous artificial holes is the Kola Superdeep Borehole. Its depth is also over 40,000 feet! If you dropped a coin down the shaft, it would be falling for 50 seconds before it reached the bottom. A mere 9 inches across, this well was created for scientific purposes. People wanted to drill through the Earth's crust and see what lay below. But what if, by some miracle, you managed to drill a hole all the way through Earth? You've got through 8,000 miles of molten magma and solid rock. You've withstood the temperatures of almost 11,000˚F and extreme pressure – more than 300 million times more than at the surface of the planet. The well is wide enough for an adult to pass without having to squeeze through. It's also perfectly straight. The hole's walls are incredibly strong and won't collapse or melt. And then, while standing on the well's edge, admiring your handiwork, you slip and fall into the gaping abyss! #brightside CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0:
Kola Superdeep Borehole: By Andre Belozeroff, https://commons.wikimedia.org/w/index.php?curid=6079899
CC BY-SA 2.0 https://creativecommons.org/licenses/by-sa/2.0:
121 Mortimer Road in 2005, while Lyttle was living there: By Fin Fahey, https://commons.wikimedia.org/w/index.php?curid=90964186
Lyttle's house in 2009, after his eviction: By Chris Whippet, https://commons.wikimedia.org/w/index.php?curid=14019497
CC BY 2.0 https://creativecommons.org/licenses/by/2.0:
The Homestake Mine pit in Lead, South Dakota: By Rachel Harris, https://commons.wikimedia.org/w/index.php?curid=5815549
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The deepest holes on Earth 0:01
How long would it take you to fall through the Earth? 1:37
But you can't do that because of the Coriolis Effect 1:55
The tunnels dug under the Mole Man's home 3:14
The deepest swimming pool in the world 3:49
The world's deepest hotel 4:06
The deepest gold mine in North America 4:36
The deepest multicellular animal 5:11
You leave Earth's outermost layer 6:06
Earth's inner core! 6:54
Gravity at the center of the Earth 7:20 Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
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More What If You Fell Through Earth and Came Out the Other Side Videos

Nowadays it is essential to know how to react in dangerous situations to keep yourself safe. Do you know, for example, how to protect yourself from an attack? How to act when meeting potentially dangerous people in order to stay safe? If you feel like someone’s getting on your tail, you should be able to safely manage the situation. We gathered some useful tips to help you avoid bad consequences if you’re being followed or watched. Imagine you are walking alone at night. You certainly want to be prepared and know how to react in case someone dogs you. Of course, the first thing you might want to do is to start walking slightly faster. This trick can help you either get rid of the suspicious person behind you or… confirm your worst fear. If you have to walk home alone sometimes, here are our tips on how to get there safely. #brightside TIMESTAMPS:
Try to make turns 0:18
Speak to someone 0:56
Don't enter your condo 1:19
Whay about your clothes? 1:40
How to shake that stranger off 2:33
Don’t take your phone out 3:15
Make a fuss 3:52
What if someone's following you in public 4:56
If the stranger enters an elevator with you 6:36
Dogs can pose a serious threat, too 7:09 Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
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More What to Do If Someone Grabs You from Behind Videos

Nowadays it is essential to know how to react in dangerous situations to keep yourself safe. Do you know, for example, how to protect yourself from an attack? How to act when meeting potentially dangerous people in order to stay safe? If you feel like someone’s getting on your tail, you should be able to safely manage the situation. We gathered some useful tips to help you avoid bad consequences if you’re being followed or watched. Imagine you are walking alone at night. You certainly want to be prepared and know how to react in case someone dogs you. Of course, the first thing you might want to do is to start walking slightly faster. This trick can help you either get rid of the suspicious person behind you or… confirm your worst fear. If you have to walk home alone sometimes, here are our tips on how to get there safely. #brightside TIMESTAMPS:
Try to make turns 0:18
Speak to someone 0:56
Don't enter your condo 1:19
Whay about your clothes? 1:40
How to shake that stranger off 2:33
Don’t take your phone out 3:15
Make a fuss 3:52
What if someone's following you in public 4:56
If the stranger enters an elevator with you 6:36
Dogs can pose a serious threat, too 7:09 Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
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More What to Do If You’re Grabbed from Behind or Followed Videos

Do you like puzzles, quizzes and problem-solving? Then this marathon is right for you! The best riddles in one place to test your brain and make it work to the fullest! Remember, if you don't train your brain, it gets rusty. Some psychologists say that riddles help us develop creative thinking and improve our memory. You get the task of finding the culprit or making the smartest choice on screen. And it makes you smarter in real life as well. Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
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More An Epic Riddle Marathon Only the Smartest Viewer Will Finish Videos