There are several things we can't see; those include:
* Most electromagnetic waves - all except visible light are invisible for the human eye. This includes radio waves, infrared, ultraviolet, gamma rays.* Electric fields
* Magnetic fields
* Gravitational waves
* Gas
Dark matter has been deduced to exist, but it has never been seen.
If everything exists in space, then where does space exist?"In the space between spaces."as quoted by Dr. Oxley from the movie Indiana Jones......jk :)In the universe. Space exists in the universe.
there are no particles for the light to bounce off of
Well, Actually you cant see the Great Wall Of China From Space. For you to be able to see it, it would have to be a lot taller, bigger, etc.
yes it orbits the moon and exists in space even now.
Yes.
Distance is measured or measurement is distance.Distance exists in space and time.Time exists in space.Space is a created phenomena.Just as space in a jar there is space in between words.Time is supposed to travel within that space. Time is measured and so also the created space.
Why cant sound travel through empty space
The universe is commonly defined as all the time, space, matter, and energy that exist. It does not make sense to ask how something exists outside of what exists. If something exists, it, the space it occupies, and the time it exists in are all a part of the universe by definition.
Its the Universe.
You cant go up into space for no reason
Everything that exists anywhere, including outer space, qualifies as "nature".
It is water the was evaporated and turned in to a gas. That is why you can't see it.unless im the only one who can see steam..