Why Cannot astronauts talk on moon?

The moon does not have atmosphere. Since there is no medium which is necessary for generation and propagation of sound, between the astronauts, direct sound propagation between them is not possible.

Why can't astronauts talk on moon?

Sound waves need a medium to travel. As there is no atmosphere or medium on the moon, that's why no sound can be heard on the moon. Astronauts use radio waves while talking to one another on the surface of the moon.

Why can't two people communicate on the moon?

Sound needs a medium to be transmitted. Thus a person on the moon cannot hear another person on the moon. This is because there is no air on the moon and it is a vaccum( no medium). Thus there is no medium for sound waves to travel.So two persons cannot hear their voice on moon.

Can astronauts talk to each other on the moon?

Due to lack of medium, sound can't propagate on lunar surface and therefore astronauts use special type of electrical devices on their helmets which transfer sound waves from their voices into radio waves and transmit it to other astronaut. The mechanism is similar to working of radio at our homes.

Why can't astronauts talk to each other in space?

Space has no air. Since sound waves require a material medium to propagate, therefore, astronauts cannot talk to each other in space.

The Problem with the Next Moon Mission

Why can't astronauts cry in space?

However, as astronaut Chris Hadfield notes, in microgravity, "your eyes make tears but they stick as a liquid ball." In other words, astronauts technically can't cry. Sure, you can get a watery substance to come out of your eyes, but it doesn't fall like it ordinarily does on Earth.

Why can't people cry in space?

Astronauts can't cry the same in space as they do on Earth.

Your eyes make tears but they stick as a liquid ball. In fact, they sting a bit. So — space tears don't shed." Unless an astronaut wipes that water away, tears in space can form a giant clump that can break free of your eye, as The Atlantic explained.

What will happen if two persons talk on moon?

On the moon there is no atmosphere, which means there is no medium present. Since sound needs a medium for its propagation it cannot travel. So when two persons on the surface of the moon talk to each other they cannot talk to each other.

How long does it take to talk to the moon?

Propagation time to the Moon and back ranges from 2.4 to 2.7 seconds, with an average of 2.56 seconds (the average distance from Earth to the Moon is 384,400 km).

Why can't you hear a bomb explosion on the moon?

Sound waves require a material medium for propagation. There is vacuum between Earth and Moon. In vacuum, there are no molecules (material medium) through which sound waves produced by the explosion can propagate. Therefore, big explosion on the Moon cannot be heard on the Earth.

Why does the sky look black on the moon?

In space or on the Moon there is no atmosphere to scatter light. The light from the sun travels a straight line without scattering and all the colors stay together. Looking toward the sun we thus see a brilliant white light while looking away we would see only the darkness of empty space.

Can any life exist on the moon?

Potential for Life? The Moon's weak atmosphere and its lack of liquid water cannot support life as we know it.

Can two astronauts listen to each other?

Answer: In space there will be no medium for sound waves to travel and it will be vacuum. Sound cannot travel in vacuum hence sound cannot be heard without any special device.

Why don't we see the back of the moon?

Its rotation period and its orbital period are the same. Thus we cannot see the far side of the Moon; if it did not rotate, we could see all parts of it from Earth over the course of a month.

How long can a human breathe on the Moon?

The moon has almost no atmosphere, so there's no air for us to breathe. There is no water on the moon either, and we need to drink water to survive. Days and nights on the moon last over two weeks long!

How many people are on the Moon?

Neil Armstrong and Edwin "Buzz" Aldrin were the first of 12 human beings to walk on the Moon. Four of America's moonwalkers are still alive: Aldrin (Apollo 11), David Scott (Apollo 15), Charles Duke (Apollo 16), and Harrison Schmitt (Apollo 17).

How long would we survive on the Moon?

NASA says humans need to breathe about 800 grams of oxygen a day to survive. So 630kg oxygen would keep a person alive for about two years (or just over).

Can we hear sound in space?

No, there isn't sound in space.

This is because sound travels through the vibration of particles, and space is a vacuum. On Earth, sound mainly travels to your ears by way of vibrating air molecules, but in near-empty regions of space there are no (or very, very few) particles to vibrate – so no sound.

What will happen if you shout on the moon?

However, there is no atmosphere on Moon, i.e., there is no medium for sound to travel. Hence, no sound can be heard on the Moon.

Why moon is lonely and silent?

Moon is a lonely and a silent place because of the absence of air. Life cannot survive without air, so there is no life on moon and it is lonely. Also, as sound needs air to travel, there is no sound on moon either.

What would happen if you yelled in space?

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.

Where do tears go in space?

Since tears on Earth only stream down a person's face because of gravity's influence, tears shed in microgravity do not fall. Instead, they pool on the face and could eventually drift off in little droplets that disperse throughout the orbiting science laboratory.

Have any Americans been lost in space?

To date, no astronaut has ever been 'lost' to space during one, but there have been a couple close calls. When outside their spacecraft, astronauts attach themselves to the hull with tethers made of heavy-duty materials like kevlar.

What happens if an astronaut sneezes?

On Earth, health experts recommend you sneeze into your elbow to keep viruses to yourself. On a spacewalk, that's not an option. Here's what you want to do: "Aim low, off the windshield, because it can mess up your view and there's no way to clear it," said six-time spacewalker Dave Wolf.

Is being in space painful?

Astronauts may have no trouble moving heavy objects in the weightlessness of space, but that doesn't mean that the experience isn't hard on their backs. Astronauts on long-duration spaceflights routinely report back pain, both during and after the flight.