How close can you get to the sun without burning up, and how hot is it?
Dec 21, · If a spacecraft were to be wrapped up in that kind of shielding, it would get to within million miles of the sun. The integrity of the shielding would be compromised well before that, so. Mar 18, · You can get surprisingly close. The sun is about 93 million miles away from Earth, and if we think of that distance as a football field, a person starting at one end zone could get about 95 yards.
There are no exceptions to this rule. Which makes the how to make a woven duct tape wallet in Passengerswhere the interstellar ship does a flyby of the sun, so peculiar. Would Chris Pratt and Jennifer Lawrence really be able to get that close to the sun to take in such a gorgeous sight? Or would they really be vaporized long before then? Very few things besides other suns could survive that kind of heat.
A standard space suit will protect an astronaut by temperatures of up to degrees Fahrenheit; still great in most instances, but extremely poor for trying to touch the sun. Relatively speaking, this is still pretty close.
If a spacecraft were to be wrapped up in that kind of shielding, it would get to within 1. The integrity of the shielding fan be compromised well before that, so, theoretically, you could make it to that distance before become fried to death. There are a couple of other things to consider — namely that cosmic radiation would probably kill you before you reach a complete half the distance to the sun. Besides that, one solution that may help future astronauts make it closer to the sun would be mirrored shielding.
The sun giveth, and the sun taketh. Neel V. Related Closd Physics Space Science.
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Nov 05, · One highly-cited model for estimating a star’s habitable zone for Earth-like planets suggests that we’re just million kilometers away from the . Earth (and we) are about 93,, miles from the sun. To give you an idea about how far that is, suppose we could build a highway and drive a car to the sun. Let's drive 65 miles per hour. It would take over YEARS to get there! Jul 19, · The sun is about 93 million miles away from Earth, and if we think of that distance as a football field, a person starting at one end zone could get about 95 yards before burning up. That said, an astronaut so close to the sun is way, way out of position.
The following questions were answered by astronomer Dr. How large is the sun? Pretty big! Its diameter is about , miles. You could line up Earths along the diameter of the sun! How heavy is the sun? Now that's a heavy question! The sun weighs 4. By comparison, the earth weighs 1.
So the sun's weight equals , Earths! How big is the core of the sun? The sun is about , miles in diameter. That would take our car 1. What we call the core of the sun is the inner part where the nuclear energy is released. This is the source of the energy that we see as light from the sun. The core is about one-fourth the size of the sun, or about , miles across.
That is still pretty big! Earth is only about 8, miles across. How did the sun form? We believe that the sun formed from a big cloud of gas and dust. The cloud was dark and cold, and its gravity caused it to fall together. The gas that collected at the center got hot from all the other gas falling on it. When nearly all the gas and dust had fallen together, the center became very hot and very dense — our sun.
Some of the leftover gas and dust going in orbit around this baby sun became the planets. How does the sun get its gases? Most of what the universe is made of is gas — mostly hydrogen gas. When the sun formed, it formed from a cloud of gas. However its gravity holds it together very strongly, making it hot and dense.
How far away are we from the sun? Earth and we are about 93,, miles from the sun. To give you an idea about how far that is, suppose we could build a highway and drive a car to the sun. Let's drive 65 miles per hour. How hot is the sun? The surface of the sun is about 10, degrees Fahrenheit 5, degrees Kelvin. That may seem mighty hot, but it is even hotter deeper inside the sun. What is the temperature of the sun's core?
The sun's core is extremely hot — about 27 million degrees Fahrenheit 15 million degrees Kelvin. That is because of the tremendous pressure of the weight of the sun pressing down on the core — equal to , Earths. In pounds, that is 9 followed by 29 zeros! How do you measure how hot the sun is if you can't get that close to measure? One way is to study the sun's spectrum — that is, break up its light with a prism. A rainbow is a spectrum created when sunlight goes through raindrops, which act as little prisms.
If we do this with a special device called a spectrograph, we can see that there are thin dark lines throughout the sun's spectrum. Scientists have examined the different elements on earth, so we are able to figure out what kind of gas, say hydrogen, gives rise to which dark lines. It turns out that every element has a unique set of dark lines, like fingerprints.
We can use them to figure out what the sun and stars are made of. They also show us how hot the gases are. Another way is to look at sunlight and measure how much light is in the blue part of the spectrum, in the yellow, in the red.
The hotter something is, the more light it gives off in the blue compared to the red. All these methods show us that the sun's surface is about 10, degrees Fahrenheit! How close can you get to the sun without burning? Not very close! Have you ever gotten a sunburn? That's right here on earth with the atmosphere to protect you. In space, you would have no protection from the sun's ultraviolet light on earth the ozone layer protects us.
If you could go into space without a spacesuit, you would get burned badly by the sun. How close have people gotten to the sun? So far people have circled Earth in spacecraft and the shuttle, but that is only a few hundred miles up. Years ago NASA astronauts went to the moon, which is about , miles away. But that is it. We have not yet visited any other planets or gotten close to the sun. For comparison, the sun is 93,, miles away — much, much further than the moon.
How do scientists determine the layers of the sun? The outer layers, which we can see, are the corona, the chromosphere, and the photosphere.
We can use the techniques I described above to measure their temperatures. Inside the sun there are also layers, but we can't see them. We know about them only from detailed mathematical models of the interior of the sun. We test these models to see if they accurately represent how the sun looks and behaves.
They give us our best "guess" of what is going on inside the sun. What is the next closest star to Earth besides our sun? That would be the double star Alpha Centauri. It is the brightest star in the constellation Centaurus, which unfortunately we can't see from the U. Alpha Centauri consists of two stars in orbit around each other. They are nearly twins, and are also very similar to our sun.
It takes 80 years for the two stars to orbit each other. There is a third star, called Proxima Centauri, which may be in orbit around the other two stars. It is a dim, cool star, but happens to lie a little closer to us than the other two. Thus the name Proxima. If there is no oxygen in outer space, how does the sun burn? Don't things need oxygen in order to burn? There is no oxygen in space. Then how can the sun be burning? The answer to that is that the sun isn't burning the way we usually think of things.
The energy and light from the sun come from nuclear reactions deep inside the sun that occur at incredibly high temperatures millions of degrees! That energy keeps the entire sun hot, although at the surface it is ONLY about 10, degrees Fahrenheit. Anything that hot will glow and give off light, and that is why the sun is bright and looks like it is on fire. Why is the sun orange in the morning and bright white in the afternoon?
If you look at the sun when it is first rising in the morning or setting in the evening, it is passing through more of the earth's atmosphere. The air scatters light, but it scatters blue and green light the most. Why is the sky blue? Because that is all the blue sunlight that the air has scattered!
In the middle of the day, the sun seems white because not that much blue light is scattered. But in the morning and evening, most of the blue and green light are scattered.
If you take blue and green away from white, you get orange and red. You may have noticed that the sun seems dimmer in the morning and evening than in the middle of the day. That is correct, because some of the light has been scattered away.
Why doesn't the sun look like the other stars? Actually the sun is very much like the other stars. But it is much closer.