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It depends on what part of the Earth you are referring to. If the sun suddenly 'blinked out' the atmosphere would literally condense and fall to the ground and the surface temp would hover just a bit above absolute zero. However, this wouldn't spell the end of life on the planet. Geothermal activity would go on as usual. The Earth's core would continue to generate tremendous heat supporting extremeophiles and even liquid water. So the answer is, dig deep enough, stock up on food, and stay warm!

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15y ago
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13y ago

The earth will take more time to round the sun so the year would be longer than 365 days. Also the gravitation would change so there's a possibality that moon's orbit would also change which would change the time between two full moons. The heat reaching earth would decreas, so the season cycle would change. In fact there are many possibalities but we can ensure them only after making the orbit bigger.

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7y ago

If there is no sun we were not have any light and it's affect plant(because plant photosynthesize to make food for their self) so the plant can't reproduce and these animal were not have food sorces(as plant Is the producers for the whole environment)and animal were die And can't reproduce do the animal were became extinct and there will be no food sources for humans in the end.

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Actually there would be no Earth anyway because planets accrete from a disc of dust and gas which can only form around a star of sufficient bulk to capture the material in the first place!

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9y ago

The earth would not be noticeably colder. What greenhouse gases do is they hold in the heat, causeing the earth to be hotter not colder, that's why we have increased tornados, avalances and tsunamis. And that is also why winters turned into soggy winters rather then white snow winters. In tropics such as islands, Australia for eg. has had rain stroms and floods ( in lower areas of the globe due to the melting of Antarctica ) but in the top of Australia (and further from the high water intake) there are droughts. So the answer is, as years go by the heat level will get higher, and winters will become warmer.

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It is regrettable, but almost all of the above answer is wrong and misleading. The most obvious ignorance of facts is that Antarctica is melting. This was an incorrect story invented by climate change ranters. You may remember that a few months ago a ship went to Antarctica to prove that it was melting . . . this ship, with 74 climate change ranters aboard got caught in the ice, and could not get out. Even huge icebreakers from several countries were unable to free this ship for weeks. It was not melting, but freezing more than ever.

The arctic was for a while warmed by the North Atlantic Ocean periodic oscillation. Poor polar bears. That ended near the end of 2013, and a huge number of square miles of the Arctic refroze. No melting. No issue there!

Dozens of studies by atmospheric scientists 100% show that the result of any earth warming (there has been none since 1998) is actually beneficial to animals, humans, and plants. This is so simple to understand that it is embarrasing that so many climate change ranters get it dead wrong, time after time, after time.

"The winters will become warmer" is says, above. The absolute facts are that the Earth's temperature has not risen in 16 years. By the way, droughts and floods have existed for millions of years! There is such a flood even mentioned in the Holy Bible.

Tsunamis are caused by underwater earthquakes, not by temperatures.

Remember Hurricane Katrina? The global warming ranters said that was only the beginning of monster hurricanes. What happened? There were no hurricanes at all for two years, and the ones since have been relatively mild. (Hurricane Sandy was not a"mega" hurricane . . . it just happened to go from the ocean onto land where hurricanes almost never go - the people were totally unprepared, and there was a lot of damage.

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13y ago

In general terms research has thought the atmosphere is what keeps us to the ground. So if the earth were to grow the atmosphere wouldn't change. It would be putting pressure on the earth so buildings could get flattened down or exit the earth in to outer space. Hope that answers you're question.

In addition, if the Earth was larger then the atmosphere would contain free hydrogen like in Jupiter.

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9y ago

There would be no life on earth without the atmosphere. No atmosphere means no oxygen to breathe. This is because if there were no atmosphere, the stratosphere would not be there to keep the ozone in the earth. The Mesoshpere is one of the outer layers of the atmosphere. It helps us by burning up meteors that are going to strike earth, and if it was gonna hit earth it would make less impact, the Thermosphere keep earth warm enough so that water exists and plants and vegetable will grow.

Also space radiation will harm all the living forms on the earth.

For our survival, the atmosphere is very important.

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14y ago

Then it would quickly fill up, due to the pressure of the surrounding air.

Then it would quickly fill up, due to the pressure of the surrounding air.

Then it would quickly fill up, due to the pressure of the surrounding air.

Then it would quickly fill up, due to the pressure of the surrounding air.

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14y ago
  • It would super hot in the day and super cold at night
  • The temperature would rise so high and it would kill all the living matter, the watter would evaporate. If it turned into dense clouds it would never rain, it could block of the sun and it would cool down, if it just dispersed creating a new atmosphere it would always be hot because there is no bod of watter to regulate the earth temperature.
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10y ago

The sun can't just "disappear". Well, there's something called quantum tunnelling that theoretically can occur, but the probability of it happening depends on the size of the object and the distance, and for something the size of your car keys moving from the dresser to, say, one of the dresser drawers the probability is so small that the lifetime of the universe isn't long enough for it to have a measurable chance of happening. This means that for the sun to do so a distance long enough to matter the probability is so close to zero as to be virtually indistinguishable from it.


However, it's not precisely zero. So let's assume the miracle occurs and the Sun disappears and pops up a couple of light years away through quantum tunnelling


The Earth is about 93 million miles (150,000,000 km) away from the sun. We wouldn't know about the Sun disappearing when it happened (okay, pedants, we would know "when it happened" in the relativistic sense), because it takes about 500 seconds for sunlight to reach Earth.


Gravity, from what we can tell, propagates at the same speed, so at the same time we saw our sun disappear the Earth would fly out into space tangent to wherever it was in orbit.


The outer planets are further away, so it would take longer for them to be affected. Jupiter, for example, is about 43 and a quarter light-minutes from the Sun. Then, of course, its reflected light still has to reach us. Depending on exactly where it is in its orbit, we'd still see Jupiter reflecting sunlight for around an hour to an hour and a half after we saw the Sun vanish. Also, while we could see it, it would still be orbiting the (from our perspective nonexistent) Sun, assuming we could make measurements precise enough to tell.


The Moon is less than a light-second from Earth, so it would stop shining at practically the same time the Sun did. Its orbit with respect to Earth would be largely unaffected.


Our only source of natural light would be the stars (which contributes only a very small fraction of the light equivalent to the full moon) so there would be enough light that it wouldn't be completely dark, but not really enough to see well.


Artificial lights would, of course, keep working. Except for those that are solar powered, which would go out once they'd used up their batteries and never come on again.


Photosynthesis would stop instantly (except for plants under artificial light). The small plants would die quickly and the trees would slowly die. But we have enough oxygen already in our atmosphere to last us for a while, so our air would be fine. We would have enough air for this generation of people to finish out most of their lives.


We wouldn't survive our whole life though. After about a week, average global temperature would hit freezing, and just keep getting colder from there until after a few years the atmosphere started raining and/or freezing out.


Life near geothermal "hot spots" like Yellowstone could still be possible for a while, especially if you could find a cave and seal it against air loss. You'd have to trudge out in a space suit to pick up a pail of air occasionally, and you'd want some kind of power source (like a geothermal one, which would work more efficiently than they do now, because of the greater temperature differential) for light.


The oceans would not freeze completely solid for a very long time. Life on the sea floor near thermal vents, for which there might as well not be a Sun now, would get on just fine.


If the Sun just silently went out or collapsed into a black hole (still miracles, but both a bit more likely than it disappearing and reappearing someplace else entirely), all the above would still happen except for the "flying out into space" part ... we'd still continue to orbit the darkened Sun.


(Note: this isn't really my answer, though I did add a couple of things. See the related links for a video version that I cribbed most of this from.)

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11y ago

Sunlight is the Earth's primary source of energy, with other sources including cosmic rays. Plants photosynthesize sunlight, converting it to chemicals for survival. It's also involved in the production of vitamin D in various organisms. Sunlight, along with cosmic rays, is also responsible for our planet's dynamic climate.

Finally, without the sun's heat, the Earth's atmosphere would gradually cool and ice over, causing a most-probable complete extinction of life. Some life may continue to exist due to the continued warmth of the Earth's crust, which some forms of bacteria rely upon instead of sunlight.

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Q: What do you think Earth's surface would be like if Earth did not have an atmosphere?
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