The speed is proportional to the square root of the absolute temperature, giving an increase of about 0.6 m/s per degree Celsius.

Temperature is another condition that affects the speed of sound. Heat, like sound, is a form of kinetic energy. Molecules at higher temperatures have more energy and can vibrate faster and allow sound waves to travel more quickly. The speed of sound at room temperature air is 346 meters per second.

The speed of sound changes by about . 6 metres per second for every degree. Sound is transmitted through the air by compression waves, which, at a small scale, depend on molecules transferring energy one to another. Air molecules have more energy at higher temperatures, which means they vibrate faster.

The speed of sound increases by 0.6 meters per second (m/s) for every degree-Celsius (°C) increase in temperature.

Sound waves are travelling vibrations of particles in media such as air, water or metal. So it stands to reason that they cannot travel through empty space, where there are no atoms or molecules to vibrate.

gases

Sound does not travel at all in space. The vacuum of outer space has essentially zero air. Because sound is just vibrating air, space has no air to vibrate and therefore no sound.

Yes light travels faster in vacuum than any other medium. This is because there is no obstruction in vacuum for the propagation of light and thus, the refractive index of vacuum is the lowest. Show the speed of light in vacuum is the maximum.

Yes, wind can travel faster than the speed of sound. Wind is just the bulk movement of a mass of air through space and is in principle no different from a train speeding along or a comet zipping through space. The speed of sound just describes how fast a mechanical wave travels through a material.

Some wormholes may be “traversable”, meaning humans may be able to travel through them. For that though, they would need to be sufficiently large and kept open against the force of gravity, which tries to close them. To push spacetime outward in this way would require huge amounts of “negative energy”.

Wormholes are sci-fi staples; over the years, many stories, books and movies have sent their protagonists zipping between widely separated locales via these cosmic shortcuts. Wormholes are possible, according to Einstein’s general theory of relativity, but nobody has ever spotted one.

No evidence has been found that wormholes exist. “These are speculative for sure, with a capital S,” says physicist William Gabella of Vanderbilt University in Nashville. But if they do exist, researchers have a chance of detecting the wormholes via gravitational waves.

A person at its center will travel forward in time at a rate four times that of distant observers. With current technologies, it is only possible to cause a human traveler to age less than companions on Earth by a few milliseconds after a few hundred days of space travel.