Why though is everything so perfectly made? Space seems to perfect to be true. However, why are we the end product? Why is everything else dead and why are there these rules, why do atoms exist or stars or black holes? Why does anything exist. Notify me of follow-up comments by email. Notify me of new posts by email.
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Email Address. Skip to content. Home About Faq. Q: If you could hear through space as though it were filled with air, what would you hear? Posted on October 9, by The Physicist. Email Print Facebook Reddit Twitter. This entry was posted in -- By the Physicist , Astronomy , Physics. Bookmark the permalink. October 10, at pm.
Curious Kids is a series for children of all ages. Right above you is the sky — or as scientists would call it, the atmosphere. It extends about 20 miles 32 kilometers above the Earth. Floating around the atmosphere is a mixture of molecules — tiny bits of air so small you take in billions of them every time you breathe. Above the atmosphere is space. Have you ever wondered what it would be like to travel to outer space — and then keep going?
What would you find? At the beginning of your trip through space, you might recognize some of the sights. The Earth is part of a group of planets that all orbit the Sun — with some orbiting asteroids and comets mixed in, too.
You might know that the Sun is actually just an average star, and looks bigger and brighter than the other stars only because it is closer.
To get to the next nearest star, you would have to travel through trillions of miles of space. If you could ride on the fastest space probe NASA has ever made, it would still take you thousands of years to get there. If stars are like houses, then galaxies are like cities full of houses. In the Sun, it might take a million years for heat to migrate to the surface It is a long way off.
But there is no air to carry away the heat. So heat is trapped. More and more heat is produced. The temperature of the Sun rises until the surface gets hot enough to glow. A glowing surface emits light, which carries away energy and cools the Sun. It turns out that when the surface is white hot, it emits enough light to carry away energy as fast as the interior produces it.
The Sun emits energy as light. It there was air, it could also emit it as sound. But air absorbs light and sound. Within miles, it would be turned into heat. So the net result is the heat of the Sun would be trapped in the layer of air near the sun. The air would get hotter and hotter until it glowed. This is much like the Sun, but perhaps a little bigger. In a few billion years, the Sun will run out of hyrdogen.
It will start to fuse helium, which will produce a lot of heat. The surface of the Sun will get hotter. The hotter gases will expand and become less dense. Expanding will also cool the gas. A larger but cooler surface can radiate as much energy as a small hot surface. The surface will be only red hot. The Sun will become a red giant. The expansion and drop in density will be enormous.
The Sun will expand past Earth's orbit. The density will be so low, it might be best described as red hot vacuum. Earth will vaporize. Nothing, even if you were fireproof. Sound at audible frequencies does not travel in near vacuum. Sound, in simple words is vibration of air.
So in theory yes, we should hear the Sun if there was a medium like air that could transfer the vibrations. That's just my opinion, of course I can be wrong as this is purely theoretical question and answer. You might consider that if there were a medium capable of transmitting sound between the sun and earth, it is more than likely that species including our own would have evolved methods to ignore or filter out the noise.
Much in the same way as we avoid looking directly at the light source for instance. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Learn more. Would we be able to hear the sun if space were full of air? Ask Question. Asked 7 years, 7 months ago. Active 2 years ago.
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