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What If The Sun Disappeared?


What If the Sun Suddenly Disappeared?

Imagine yourself waking up one morning at the crack of 10 a.m., pulling back the bedroom curtains with your usual aplomb and finding yourself staring into cold, bleak darkness.

If you were living in an area affected by the polar night this might not seem like a big deal. If you were situated in a slightly more temperate region where one would expect to see something besides pitch-black, your spider-sense might start tingling as you started to realize that something just wasn’t right.

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Presented by INSH and Hashem al Ghaili

What If asks some of the most provocative hypothetical questions in science — and then tries to answer them with the help of established scientific theory and the latest research.

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What If The Sun Disappeared For One Month?

What if the sun goes out right now?
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How Long Would We Have to Live if the Sun Went Out?

We take for granted that the sun will come up tomorrow, but what if the sun went down and stayed down. How long would humanity survive without the sun heating up our Earth? In today's video we are looking at the dim future of Earth without the sun shining down and heating up our planet. How much sun do you think we have left? Can the human race survive this horror story scenario.


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What if Sun Suddenly Disappeared?

What will happen to the planet Earth if Sun suddenly disappears. Let's find out.


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如果太陽突然消失了? | 大膽科學





What if the Sun Disappeared? | #aumsum

The sun’s enormous mass and gravitational power locks the planets in their orbits. If the sun disappeared, the earth would fly off in a straight line into space. Earth would collapse into darkness only after 8 minutes, as sunlight takes about 8 minutes to reach earth. Moon would disappear as it doesn’t produce light of its own. Plants would die, as no sunlight means no photosynthesis.

Within a week, earth’s temperature would drop below 0 degrees Fahrenheit, dropping to negative 100 degrees Fahrenheit within a year, making it impossible for us to survive. Ocean surfaces would freeze, however, water in the interior would stay liquid, due to heat from the Earth’s core. Only microorganisms who don’t require photosynthesis, would survive by converting core’s heat into the energy they need. Thus, without the sun, humans wouldn’t exist.

What Would Happen If The Sun Suddenly Disappeared? | Unveiled

What Would Happen If the Sun Suddenly Disappeared?

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No one really knows for sure exactly what would happen if our Sun suddenly disappeared. But if you use science to look at some of logical things that would likely happen, you would get a fairly accurate idea of the chain of events that would take place if our Sun suddenly disappeared from our solar system.

It should be made clear that the Sun can’t be suddenly snuffed out like fire. Nor will it simply stop burning one day. However, it’s an interesting concept to go through the stages of what would happen next.

So if you’re curious what life on Earth would be like, and what would happen to the Earth if the sun suddenly vanished, then keep watching.

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What If The Sun Disappeared For 5 Seconds?

What If The Sun Disappeared For 5 Seconds?
Subscribe To Life's Biggest Questions:

What If the sun disappeared for 5 seconds? Seems like a really odd question. 5 seconds isn’t very long. But the sun is so vital to everything on earth, as well as the rest of our solar system. Even if it only disappeared for 5 seconds, that 5 seconds would be enough to cause some serious damage.

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What If The Sun Disappeared For 1 Hour?

What If The Sun Disappeared For 1 Hour?
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The Sun is the centre of our solar system, and is integral to our lives here on Earth. But what if it randomly disappeared for an hour? Let’s explore
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What If a Black Hole Replaced The Sun?

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What Would Happen If Humans Suddenly Disappeared? | Unveiled

What Would Happen If Humans Suddenly Disappeared?

It could be said that humans have really done a number on the planet. We’ve created a mess with our industrialization, the creation of toxic chemicals, garbage dumps and oceans filled with plastic, and giant urban sprawls that have eaten up big chunks of nature. With all this stuff happening, it might not be a bad idea if suddenly humans disappeared overnight. It’s obvious a lot of things would be happening during the cataclysmic disappearance. With that said, let’s run a mind-thought experiment and see what would happen if humans disappeared.

Imagine a world in motion. Humans are controlling all kinds of systems, vehicles, machines, and aircraft. If we suddenly disappeared, it is assumed that the machines that we are operating would come to a halt, but not without a lot of ensuing chaos. Airplanes would fall from the sky, cars would keep going in the direction they were moving without anyone to control or stop them, and machines we control to build things would either keep drilling, digging, or moving something. With nothing controlling these machines, there would be at least an hour to several hours of destruction. It would be a good thing that humans would be missing from this part of our disappearance.

This doesn’t even include factories, coal and power plants, gas works, oil refineries, nuclear power plants, and other industrial places that will have some sort of problem without humans at the controls. However, it is very probable that the lights will go out first, and likely within a few hours should we cease to exist. The only power plants that would still be making power would be hydroelectric plants like the Hoover Dam. These could provide power for months, perhaps even years without any type of human maintenance. Speaking of water, there are some places in the world that use pumps to keep groundwater from flooding streets and metro

What Would Happen If The Earth Stopped Spinning? | Unveiled

What Would Happen If The Earth Stopped Spinning?



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It could be possible that one day, billions of years from now, the Earth will stand still. But chances are good that other events that will occur before that, such as the sun swallowing up the planet. With that being said, there isn’t a chance that the Earth will suddenly stop spinning anytime soon. But let’s just assume for a moment that the Earth did suddenly stop rotating, and take a look at what would happen to us, and the planet.

Our planet spins at its equator 1000 miles per hour as it orbits the sun. But, as you get closer to the poles, the rotation is slower. Without this rotation, life as we know it wouldn’t be possible. It is said that billions of years ago, our planet used to spin much faster than it does now. In the beginning of our young solar system, an unknown planet or large celestial body collided with the Earth, and in that collision, the Earths alignment and rotation were changed, and the moon was formed. Since then the Earth’s rotation has been slowing down. It is said that the moon used to also spin faster than it does now before it became tidally locked with the Earth.

Tidal locking is the name given to the situation when a moon or planetary object’s orbital period matches its rotational period. Coincidentally, it is the same fate that affects every single large moon orbiting a planet. A great example of this is our own Moon.
In our early Solar System, both the Earth and the Moon rotated independently of each other.

But the Earth’s gravity grabbed onto the tidal bulges and slowed down the rotation of the Moon. To compensate for the loss of momentum in the system, the Moon drifted away from the Earth to its current position, about 230,000 miles away.

What If the Sun Exploded Tomorrow?

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Correction: we mixed up the Sun‘s lifespan with its age. Of course the sun is only about 4.6 billion years old, half way through its lifespan of about 10 billion years.

That star at the center of our Solar System, that superhot ball of plasma that gives us heat and energy, and amazing complexions...well, it's a ticking time bomb. The Sun is about 10 billion years old. But it's only expected to last about another 5 billion years.
After that, the Sun will expand, becoming a red giant. Then it will shrink to become a white dwarf, a dying star, cooling for the next several billion years. Of course, we'll all be long gone before any of that happens. But still, can you imagine what it would be like to watch the Sun blow up before your very eyes?

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What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure — grounded in scientific theory — through time, space and chance, as we ask what if some of the most fundamental aspects of our existence were different.

What If the Sun Never Went Down Again

Are you one of us? A curious soul who can't live without asking yourself all kinds of thoughtful or even crazy hypotheticals? Like, why do birds fly, what if the sun disappeared right now, or what if it, on the contrary, never set?... Oh hey, why don't we try to figure out the one about the sunset thing?

Other videos you might like:
What If the Sun Disappeared Right Now?
What Will Happen In The Next 5 Billion Years?
The Solar System Is Not Like You Think It Is


We all would fly into the air 0:31

The winds would damage the earth's crust 1:47

The gravitation would be messed up 2:11

Many countries would go underwater 2:33

Rivers and lakes would boil away 2:57

Is it even possible? 3:55

What if the Sun turned into a black hole? 4:15

What if a stray black hole entered the Solar System? 5:20

What if the Sun blew up? 6:21

What if a gigantic comet crashed into the Sun? 7:45

Music by Epidemic Sound

- The first thing you would feel if Earth stopped spinning would be a mighty jerk. Our planet rotates at a velocity of 1,037 miles per hour! That's twice as fast as the average speed of a commercial jet.
- Now the fact that Earth has stopped spinning would mean nothing for the atmosphere, which would keep moving for a while. This would make for winds and waves you've never seen before, even on TV.
- If Earth stopped, all the water in the seas and oceans would tend to head toward the poles. There would be one massive supercontinent around the equator with south and north poles having turned into oceans.
- The constant sunlight would heat the planet until the temperature rose above boiling at 212 degrees F.
- Luck for you, it's HIGHLY unlikely to happen, and even if it did, it would take Earth around 1.9 trillion years to stop existing.
- It turns out that the Sun isn't big enough to turn into a black hole! It's huge alright, but a star needs to be ten times bigger than the Sun to finally condense into a black hole.
- Although the black hole would be thousands of times smaller than Earth, its mass would that much greater. You wouldn't see the approach of the black hole, but you might notice our neighboring planets disappear one by one.
- What if the Sun blew up? If it happened one day, our yellow star would turn into a much cooler red giant. During this transformation, the Sun would consume Venus, Mercury, and Earth.
- If the Sun exploded, it would shoot out a huge amount of very powerful energy. As soon as it reached the planet, this energy would wipe all life forms off the surface of Earth.
- If a comet was big enough and it happened to pass close to the Sun, the star's gravity would catch it and accelerate its steep fall up to 373 miles per second.
- According to scientists, people wouldn't feel even the slightest echo of this event, so, I guess, there's no point in worrying about this scenario.

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What If the Earth Stopped Spinning? - Full Documentary

The probability for such an event is practically zero in the next few billion years. If the Earth stopped spinning suddenly, the atmosphere would still be in motion with the Earth's original 1100 mile per hour rotation speed at the equator. All of the land masses would be scoured clean of anything not attached to bedrock. This means rocks, topsoil, trees, buildings, your pet dog, and so on, would be swept away into the atmosphere. If the process happened gradually over billions of years, the situation would be very different, and it is this possibility which is the most likely as the constant torquing of the Sun and Moon upon the Earth finally reaches it's conclusion. If the rotation period slowed to 1 rotation every 365 days a condition called 'sun synchronous', every spot in the Earth would have permanent daytime or nighttime all year long. This is similar to the situation on the Moon where for 2 weeks the front-side is illuminated by the Sun, and for 2 weeks the back side is illuminated. This situation for the Earth is not the condition of 'stopped' rotation, but it is as close as the laws of physics will let the Earth get.

If it stopped spinning completely...not even once every 365 days, you would get 1/2 year daylight and 1/2 year nightime. During daytime for 6 months, the surface temperature would depend on your latitude, being far hotter that it is now at the equator than at the poles where the light rays are more slanted and heating efficiency is lower. This long-term temperature gradient would alter the atmospheric wind circulation pattern so that the air would move from the equator to the poles rather than in wind systems parallel to the equator like they are now. The yearly change in the Sun's position in the sky would now be just its seasonal motion up and down the sky towards the south due to the orbit of the Earth and its axial tilt. As you moved along constant lines of Earth latitude, you would see the elevation of the Sun increase or decrease in the sky just as we now see the elevation of the Sun change from a single point on the Earth due to the Earth's daily rotation.

For example, if you were at a latitude of +24 degrees North in the Summer and at a longitude where the Sun was exactly overhead, it would slide gradually to the horizon as Fall approached, but since the Sun has moved 90 degrees in its orbit, it would now be due west. Then as we approach Winter, you would now be located on the dark side of the Earth, and would have to travel in longitude to a location 180 degrees around the Earth to see the Sun 1/2 way up the sky because in the Winter, the Sun is 48 degrees south of its summer location in the sky. It's a little confusing, but if you use a globe of the Earth and orient it the right way, you can see how all this works out.

As for other effects, presumably the magnetic field of the Earth is generated by a dynamo effect that involves its rotation. If the Earth stopped rotating, it's magnetic field would no longer be regenerated and it would decay away to some low, residual value due to the very small component which is 'fossilized' in its iron-rich rocks. There would be no more 'northern lights' and the Van Allen radiation belts would probably vanish, as would our protection from cosmic rays and other high-energy particles. This is a significant biohazard.

What Would Happen If Humans Disappeared?

Today we are presenting you a video on an unusual topic. Imagine that all people suddenly disappeared from the planet.
The reason is irrelevant, just imagine the result. Now we are going to tell what is going to happen after we are gone.

What If The Sun Disappeared?

The Sun isn't going anywhere. However, IF it suddenly disappeared, planets would shift apart and completely freeze, thus, transforming into snowballs.


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What If The Sun Was Smaller Than The Earth?

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In the universe, size matters. And so does distance.

How big is the Sun compared to the Earth? Imagine you were able to shrink the Sun to the size of a basketball. At that point, the Earth would be reduced to the size of a sesame seed. That’s how massive our star is.

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About What If:
An INSH original web series, presented by Hashem al Ghaili

What If asks some of the most provocative hypothetical questions in science — and then tries to answer them with the help of established scientific theory and the latest research.

Produced by
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What Would Happen If The Sun Disappeared?

What would happen if the sun disappeared right now?
The sun is an extraordinary star that holds the solar system together. With sun’s energy, plants are able to convert carbon dioxide and water into oxygen which we need in order to breath. This star is about 4.6 billion years old and it has enough nuclear fuel to exist for another 5 billion years till it becomes a red giant. So, it’s not going anywhere anytime soon. Phew! However, let’s imagine for the sake of an interesting thought experiment, if the sun were to disappear right now what implications would it cause? What would we see if it suddenly vanished? And what would it be like to live on Earth?

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