13 billion light years (rounded)
This can be seen from the redshift of distant galaxies - normally attributed to the Doppler effect.
binoculars, glasses, telescope
telescope. It uses lenses or mirrors to collect and focus light from distant objects, allowing them to be seen in greater detail and clarity.
The distant universe is seen as it was when the light we see now left it, this is as much as 13 to 15 billion years ago.
Jupiter
Moon
Yes; it is expanding right now, as can be seen in the redshift of distant galaxies.
A vision condition in which distant objects can be seen clearly, but close ones do not come into proper focus.
Neptune.
If you are myopic, you are short-sighted. Myopia is a condition where near objects are seen clearly, but distant objects are blurry.
No, quasars are extremely distant and bright objects that cannot be seen with the naked eye from Earth. They typically require powerful telescopes to be observed.
Gravity is a phenomenon that cannot be seen directly, but its effects can be observed through the behavior of objects and bodies in the universe.