What if Neptune hit the Sun?

So if Neptune were thrust so much closer to the Sun, it would warm up very quickly indeed. Over time, the Sun would affect Neptune's atmosphere, as it does Mercury's. Neptune's atmosphere is composed of hydrogen, helium, and trace amounts of methane.
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What would happen if Neptune and Uranus collide?

If the object just grazed Uranus instead of a head-on collision, the planet's interior would not be affected but the impact would still be enough to tilt the planet. Conversely, if Neptune did experience a head-on impact, the collision would have affected the planet's interior but would not form a disk of debris.
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What happens if Neptune is gone?

Neptune also has a huge effect on Pluto's orbit. Its disappearance could cause chaos and collisions in the Kuiper Belt, and would also affect Pluto, but its distance from the inner ring would result in negligible changes to us on Earth.
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What would happen if you touched Neptune?

If a person were to attempt to stand on Neptune, they would sink through the gaseous layers. As they descended, they would experience increased temperatures and pressures until they finally touched down on the solid core itself.
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Can humans survive Neptune?

Neptune's environment is not conducive to life as we know it. The temperatures, pressures, and materials that characterize this planet are most likely too extreme and volatile for organisms to adapt to.
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What If You Fell Into Neptune?



Does it rain diamonds on Neptune?

Deep within Neptune and Uranus, it rains diamonds—or so astronomers and physicists have suspected for nearly 40 years. The outer planets of our Solar System are hard to study, however. Only a single space mission, Voyager 2, has flown by to reveal some of their secrets, so diamond rain has remained only a hypothesis.
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How long would u survive on Saturn?

The atmosphere is extremely thin, and is composed of Helium, Neon, and some other unusual gases, including sodium and potassium, which are not found in Earth's atmosphere. Ebullism and lack of oxygen would inevitably kill you, so without a suit, a person could survive for about 3 minutes.
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What if Jupiter hit the Sun?

If Jupiter were mixed throughout the sun, the temperature of the sun would decrease slightly, and perhaps it would take a few hundred years for the sun's temperature to return to its previous level, and maybe we would get a few basis points less solar radiation, but it wouldn't go out. Highly active question.
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What if you fell into Saturn?

So, if you tried to walk on this part of Saturn, you would sink through its atmosphere. Saturn's atmosphere is very thick and its pressure increases the deeper you go. After a while, you would stop sinking and unfortunately be crushed by the high pressure deeper in Saturn's atmosphere.
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What if Earth had 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 would happen if Pluto hit Earth?

A collision would be quite spectacular to watch (just think back to the comet crash on Jupiter, that made some quite sizable explosions - Pluto is much bigger than a comet), although the system is so far away it will have no effect on the earth.
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What if Saturn was our moon?

Because Saturn is so large, the Earth would quickly become its moon. And if Earth orbited around Saturn, it simply wouldn't be the Earth we know today. Finally, moving on to the big guy, Jupiter. At 41 times the size of the Moon, you wouldn't even be able to see the North and South poles of the gas giant.
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What would happen if you fall into Jupiter?

Jupiter is made of mostly hydrogen and helium gas. So, trying to land on it would be like trying to land on a cloud here on Earth. There's no outer crust to break your fall on Jupiter. Just an endless stretch of atmosphere.
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When the Sun explodes will it destroy Mars?

The Sun is predicted to expand so much it would engulf Mars and Earth as if puffs up into a red giant. It's thought humans would have died out way before then unless we can find away to leave planet Earth and exist somewhere else. The 2018 study suggests, at this rate, humans only have around one billion years left.
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Can humans live on Titan?

Titan is extremely cold, with an annual temperature of -180 C (-291 F), but thankfully, due to its thick atmosphere, humans walking outside on titan would only need warm clothing and respirators. Titan's atmosphere lacks oxygen; however it contains ice water below its surface that can be used as a source of oxygen.
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Can you stand on Saturn?

The density and temperature changes the deeper into the planet you go, but Saturn can't be said to have a solid surface. If you tried to walk on the surface of Saturn, you would fall into the planet, suffering higher temperatures and pressures until you were crushed inside the planet.
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Can you fuel the Sun?

The only fuel the Sun can use for fusion is in the core, which accounts for only 0.8% of the Sun's volume and 34% of its mass. When it uses up that hydrogen in the core, it'll blow off its outer layers into space and then shrink down into a white dwarf.
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What happens if 2 planets collide?

If the cores collide at an angle then the planets may or may not merge, but in all cases a large amount of the gaseous envelope will be lost. Very oblique collisions do not disrupt the planets at all and both would continue on almost the same orbits without losing any mass.
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What happens if you plant trees on Mars?

Some conditions would make it difficult for plants to grow on Mars. For example, Mars's extreme cold temperatures make life difficult to sustain. Sunlight and heat reaching that planet is much less than what the Earth gets. This is because Mars is about 50 million miles farther away from the sun.
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Can humans live Mercury?

Tough Place for Life

It is unlikely that life as we know it could survive on Mercury due to solar radiation, and extreme temperatures.
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Can a human live on Pluto?

As such, there is simply no way life could survive on the surface of Pluto. Between the extreme cold, low atmospheric pressure, and constant changes in the atmosphere, no known organism could survive.
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