They all are.
If you are thinking about those that have atmospheres, it is not much protection.
No, planets do not make sound as they orbit. Sound requires a medium, like air or water, to travel through, and space is a vacuum where sound cannot propagate. Additionally, the movement of planets in their orbits is not accompanied by any vibrations that would produce sound waves.
A totally empty space (containing neither air nor anything else) is called a vaccum.
No problem ! Outer space is already a vacuum ... full of it ! I used to read that space is a better vacuum than any vacuum that can be produced in a laboratory on earth. Maybe that's not true any more. Bu the fact remains: Space is a pretty good vacuum. Open a pickle jar in outer space, wait 30 seconds, shake it around a couple times, then screw the cover back on, tight. When you get back, you'll have a jar full of the best vacuum any of your friends have ever seen. (Hard to prove, though.)
Yes or why would we have space flights and other planets
An area without matter can be called null, empty, void/devoid, but, there are currently no scientific terms to define this, however, an area without oxygen is called a vaccum. It is called this, because, when a door in a moving space-rocket is opened, and exposed to a vaccum, the difference in pressure between the rocket and outside causes, literally, a sort of vaccum effect to take place, everything being sucked out. The same effect is noticed on planes, however, the end result is not so lethal, as, despite the small amount of it, the Earth does contain oxygen, while, in space, there is none, so, an astronaut not wearing a space suit, exposed to a hard vaccum, will find the oxygen ripped out of his lungs.
Space is a Vacuum, consequently there are no atoms/particles to pass on the vibration a sound makes, so the sound cannot travel, and this is because space is a Vacuum.
A total vacuum is a space that is completely empty of matter. It is not practically possible to achieve a complete vacuum . An approximation to this is a space with pressure much less than atmospheric pressure.
A perfect vaccuum is pure space and has no particles in it
A completely empty space is a vacuum, devoid of any particles or matter. It is a space where the pressure is significantly lower than that of the surrounding environment. This type of space is rare in nature but can be created artificially in controlled environments.
Fly around in space to any of the planets in your spaceship
answer: NO. The process of decomposition or decomposing needs the chemical O2 or Oxygen. No Oxygen in space, No decomposing... Also, one's body would freeze within a matter of minutes, causing all bacterial life to freeze as well.
No, traditional microphones rely on air particles to transmit sound waves and would not work in the vacuum of space. In space, there is no medium for sound to travel through, so traditional microphones would not pick up any sound. Specialized equipment is needed to capture or transmit sound in the vacuum of space.