How fast would the Earth freeze without the sun?

The current mean temperature of the Earth's surface is about 300 Kelvin (K). This means in two months the temperature would drop to 150K, and 75K in four months. To compare, the freezing point of water is 273K.
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How long would the Earth survive if the sun went out?

Within a few days, however, the temperatures would begin to drop, and any humans left on the planet's surface would die soon after. Within two months, the ocean's surface would freeze over, but it would take another thousand years for our seas to freeze solid.
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How cold would the Earth be if the sun died?

Within a week, the average global surface temperature would drop below 0°F. In a year, it would dip to –100°. The top layers of the oceans would freeze over, but in an apocalyptic irony, that ice would insulate the deep water below and prevent the oceans from freezing solid for hundreds of thousands of years.
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How long would we survive without the moon?

Without the moon, a day on earth would only last six to twelve hours. There could be more than a thousand days in one year!
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What would happen if the Sun disappeared for 1 minute?

All of Earth would be in permanent darkness; the air and oceans would retain warmth for some time, but all life would eventually freeze to death.
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What If Earth got Kicked Out of the Solar System? Rogue Earth



Will humans survive the death of the Sun?

In other words, it's extremely unlikely that life on any planet can survive the death of its sun — but new life could spring from the ashes of the old once that sun shrivels up and turns off its violent winds. So, the wind may be against us now, but one day it will be gone.
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How long would it take for us to realize the sun went out?

So the answer, surprisingly, is that if the Sun "went out," we'd have about 10,000 years before we noticed anything, and even then, it would just be a gradual dimming and cooling for over 100,000 years while we figured out what to do about it!
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How long would it take to freeze the Earth?

The Atmospheric pressure on Earth is 103.2 kPa. So it would take about 15 minutes for the air to fall below freezing without the sun. So it would take about 3 day for the Earth to fall below freezing without the sun.
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How long will the Earth survive?

The upshot: Earth has at least 1.5 billion years left to support life, the researchers report this month in Geophysical Research Letters. If humans last that long, Earth would be generally uncomfortable for them, but livable in some areas just below the polar regions, Wolf suggests.
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Can you steal the Moon?

Not enough money, not enough means. To 'steal' the moon you need to disturb its orbit. To disturb its orbit you need a heavy enough mass, at a trajectory and timing precisely to go past the moon to veer it off its orbit. The only kind of mass to pull it off in that time frame is another moon, perhaps one of Jupiters.
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What if Earth had Saturn's rings?

At the equator, the rings would appear to divide the sun, casting a dramatic shadow over half the world. Likewise, the rings themselves would cast shadows on Earth.
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What year will Earth be uninhabitable?

This is expected to occur between 1.5 and 4.5 billion years from now. A high obliquity would probably result in dramatic changes in the climate and may destroy the planet's habitability.
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What year will the sun explode?

Astronomers estimate that the sun has about 7 billion to 8 billion years left before it sputters out and dies. One way or another, humanity may well be long gone by then.
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Will humans go extinct before the sun explodes?

The human species will likely destroy itself long before the sun kills everyone on Earth, a Harvard scientists says.
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What if the Sun vanished for 1 second?

Eternal night would fall over the planet and Earth will start traveling into interstellar space at 18 miles per second. Within 2 seconds, the full moon reflecting the sun's rays on the dark side of the planet would also go dark.
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What if the moon disappeared?

It is the pull of the Moon's gravity on the Earth that holds our planet in place. Without the Moon stabilising our tilt, it is possible that the Earth's tilt could vary wildly. It would move from no tilt (which means no seasons) to a large tilt (which means extreme weather and even ice ages).
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What would happen if the moon exploded?

If the moon exploded, the night sky would change. We would see more stars in the sky, but we would also see more meteors and experience more meteorites. The position of the Earth in space would change and temperatures and seasons would dramatically alter, and our ocean tides would be much weaker.
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What if Earth had two moons?

The consequences of a second moon orbiting the Earth depend on how massive that moon is and how far from the Earth it orbits. The most obvious effect would be that the ocean tides would be altered. Tides could be either smaller or higher and there could be more than two high tides per day.
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What if the Earth is twice as big?

If Earth's diameter were doubled to about 16,000 miles, the planet's mass would increase eight times, and the force of gravity on the planet would be twice as strong. Life would be: Built and proportioned differently.
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What if the Earth stopped spinning?

At the Equator, the earth's rotational motion is at its fastest, about a thousand miles an hour. If that motion suddenly stopped, the momentum would send things flying eastward. Moving rocks and oceans would trigger earthquakes and tsunamis. The still-moving atmosphere would scour landscapes.
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Can there be 2 sun?

Can a planet really have two suns? While many things about Star Wars are purely fictional, it turns out that planets orbiting two or more stars is not one of them. In 2011, NASA embarked on the Kepler mission, exploring the Milky Way galaxy to find other habitable planets.
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