How many planets have humans walked on?

Only our two nearest neighbours Venus and Mars have been landed on. Landing on another planet is technically challenging and many attempted landings have failed. Mars is the most explored of the planets. Mercury could be landed on but the speeds involved and the proximity to the Sun are challenging.
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What planets have humans landed on?

Several Soviet and U.S. robotic spacecraft have landed on Venus and the Moon, and the United States has landed spacecraft on the surface of Mars.
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What is the only planet humans have walked on?

Name all of the planets people have walked on. Earth is the only planet people have ever walked on. Astronauts have also walked on the Earth's moon, but that's not a planet.
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Who landed on Venus?

Early landings

On March 1, 1966, the Venera 3 Soviet space probe crash-landed on Venus, becoming the first spacecraft to reach the surface of another planet.
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Can you walk on Pluto?

If a person wanted to actually walk on the surface of Pluto, the astronaut would probably need to add a significant amount of weight to his gear in order to keep his feet firmly enough on the surface of the planet to actually walk around.
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Can you stand on Venus?

You would not survive a visit to the surface of the planet - you couldn't breathe the air, you would be crushed by the enormous weight of the atmosphere, and you would burn up in surface temperatures high enough to melt lead.
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Can we land on Venus?

The mission wouldn't put humans on the surface of Venus—that would be impossible to do without killing them. Instead, the humans would fly by the planet to get a closer look at the planet from above and operate a team of drones that would descend deep into the torrid atmosphere of the planet and down to the surface.
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Can we land on Pluto?

To travel the billions of miles between Earth and Pluto, the amount of fuel you would have to bring with you isn't a major problem for New Horizons, but for a manned mission, it would be prohibitive. Chemical fuels are heavy and you eventually hit a limit on how much mass a rocket can lift off the planet.
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Can you walk on Uranus?

The Surface Of Uranus Isn't Solid

The primary reason that humans cannot walk or stand on the surface of Uranus is that the surface isn't solid. Most of Uranus underneath its gaseous atmosphere appears to be composed of a slushy mixture of water, methane, and ammonia.
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Can you land on the sun?

You can't stand on the surface of the Sun even if you could protect yourself. The Sun is a huge ball of heated gas with no solid surface. The Sun's surface is always moving. Sometimes storms bigger than the size of Earth can send gas and energy flowing into space.
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Can we land on Uranus?

Surface. As an ice giant, Uranus doesn't have a true surface. The planet is mostly swirling fluids. While a spacecraft would have nowhere to land on Uranus, it wouldn't be able to fly through its atmosphere unscathed either.
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Can humans go to Saturn?

The planet is mostly swirling gases and liquids deeper down. While a spacecraft would have nowhere to land on Saturn, it wouldn't be able to fly through unscathed either. The extreme pressures and temperatures deep inside the planet would crush, melt, and vaporize any spacecraft trying to fly into the planet.
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Can you walk on Neptune?

And the pressure from the weight of all the atmosphere would be crushing. In short, there is simply no way one could stand on the “surface of Neptune”, let alone walk around on it.
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Can we go to Mercury?

Humans attempting to visit Mercury would find a similar environment to the Moon. Mercury is airless, so they would need a spacesuit to protect themselves from the vacuum of space. However, the temperatures on Mercury are much greater.
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Can we 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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Can you walk on Saturn's rings?

While they look like giant discs, they're not a solid track at all. Instead, they're made of millions of chunks of ice, some as tiny as dust particles, others as large as buses. But if you were able to hike on one of Saturn's outermost rings, you'll walk about 12 million kilometers to make it around the longest one.
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How long could you breathe on Mars?

If a person were to breathe on Mars without a spacesuit, they would pass out within 30 seconds, and they would die within a minute or two. First, their lungs would fill once, but the difference in pressure between the human lungs and the Martian air would make it very difficult for them to exhale.
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Can u walk on Mars?

On Mars, then, both the optimal walking speed and the range of possible walking speeds will be about half those on Earth. The walk-run transition on Mars will occur near the optimal walking speed on Earth, and the mechanical work done to walk a given distance on Mars will be about half of what it would be on Earth.
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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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Can we walk on Jupiter?

The temperature here would be about 55,000 Fahrenheit (30,000 Celsius) and the pressure would be tremendous because of the weight of the atmosphere above. So, if it is a solid surface, it's not at all like what you would find on a rocky planet, and it's not something you could walk on.
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Can humans live on Titan?

Robert Zubrin has pointed out that Titan possesses an abundance of all the elements necessary to support life, saying "In certain ways, Titan is the most hospitable extraterrestrial world within our solar system for human colonization." The atmosphere contains plentiful nitrogen and methane.
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Has anyone went to Uranus?

Jan. 24, 1986: NASA's Voyager 2 made the first - and so far the only - visit to Uranus. The spacecraft came within 50,600 miles (81,500 kilometers) of the planet's cloud tops.
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Has anyone went to Pluto?

The only spacecraft to visit Pluto is NASA's New Horizons, which passed close by in July 2015.
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Does Uranus rain diamonds?

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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