Sounds cannot be heard in space to begin with, so hearing any from anny time is impossible.
Secondly, the energy in a mechanical wave such as sound is dispersed and transformed as the wave travels. After a while all of this energy is turned to heat, and the wave ceases to exist, so even if sound travelled through space, we would not hear it after only a few hours, let alone years or centuries as with light.
They study distant galaxies because they want to know whats out in other galaxies and how many planets it has
Moving away from us
The light from distant galaxies is redshifted. The only reasonable explanation for that is that the galaxies are moving away from us.
The visible part of distant galaxies is the collection of stars, gas, and dust within the galaxy. These components emit light that reaches our telescopes, allowing us to observe and study the structure and properties of the galaxies.
The light from distant galaxies shows redshift because the universe is expanding. As the galaxies move away from us, the light they emit gets stretched, causing its wavelength to increase and shift towards the red end of the spectrum. This redshift can help scientists determine the velocity at which galaxies are moving away from us and provide insights into the expansion of the universe.
That is impossible to answer because scientist don't know ALL the galaxies.
The "redshift" refers to the fact that the light is less energetic than when it was emitted; it shows that the galaxies move away from us. Should a galaxy move towards us - which is possible only for galaxies that are relatively close to us - then there would be a blueshift.
The bending of light due to great masses is called Gravitational MicroLensing.
visible light
Yes. Lensing magnifies the image of galaxies behind distant galaxy clusters but also greatly distorts the image.
Telescopes are placed in space to view distant galaxies primarily to avoid atmospheric distortion and light pollution, which can obscure and affect the quality of observations taken from Earth. Space telescopes also provide a clearer and more stable view of the universe, allowing for more accurate and detailed observations of distant galaxies.
It doesn't. Light comes to us from the Sun, and from distant stars and galaxies, through what is basically empty space.