Is there sound when there is no air?

Is there sound when there is no air?

Sound travels through the vibration of atoms and molecules in a medium (such as air or water). In space, where there is no air, sound has no way to travel.

Does space make noise?

Space is a vacuum — so it generally doesn’t carry sound waves like air does here on Earth (though some sounds do exist in outer space, we just can’t hear them). But the various probes zooming through our cosmos are capable of capturing radio emissions from space objects.

How do we know there is no air in space?

The air gets thinner the higher we go. After a point where gravity is no longer acting forcefully, the air molecules (oxygen) are no longer attracted to Earth. Thus, the molecules are further away from each other, often so far apart, in fact, that we say that there is “No Air present” or label it a “Vacuum”.

Why is the universe silent?

With no space to expand into, there could be no medium around it into which sound waves could possibly propagate. But, in cosmic terms, the Universe was not silent for long — 380,000 years later (a mere 0.0003 per cent of its present age), it was filled with sound.

Is space completely silent?

In space, no one can hear you scream. This is because there is no air in space – it is a vacuum. Sound waves cannot travel through a vacuum. Space is usually regarded as being completely empty.

Can astronauts hear in space?

When astronauts are out in space, they can whistle, talk, or even yell inside their own spacesuit, but the other astronauts would not hear the noise. Because there is nothing out in space (like an atmosphere), the sound waves from one astronaut’s whistling can’t travel over to the other astronaut’s ears.

Is space really silent?

Space isn’t completely quiet — in fact, it’s rather loud. Explore the anomalies that drown out all other noise. Sound doesn’t travel in space. Sound waves work as mechanical waves by vibrating molecules in the air which, in turn, vibrate the molecules around them.

Does Moon have air?

So visually we can infer that the Moon has no atmosphere because there are never any visual disturbances. Many of you are old enough to recall astronauts walking on the Moon during the NASA Apollo program. The Moon’s gravitational field exerting a pull on those astronauts and held the astronauts to the surface.

Why is space black?

Because space is a near-perfect vacuum — meaning it has exceedingly few particles — there’s virtually nothing in the space between stars and planets to scatter light to our eyes. And with no light reaching the eyes, they see black.

What’s the scariest thing in space?

Supermassive black holes are strange. The biggest black hole discovered so far weighs in at 40 billion times the mass of the Sun, or 20 times the size of the solar system.

Can you yell in space?

A: Sound is a mecanical wave, which means that it needs substance to travel through, such as air or water. In space, there is no air, so sound has nothing to travel through. If someone were to scream in space, the sound wouldn’t even leave their mouths.