Topic: There are many colors of light in the universe

There are many colors of light in the universe. For example, look at the image at http://www.aip.org/png/html/crabneb.html

which shows how different the crab nebula looks in different “colors” of light. (I consider different frequencies as different colors, and things like ultraviolet and radio waves are “colors”)

So how are we to know what the universe actually looks like?

What are some of the advantages or disadvantages of using telescopes that look in different colors of light?

Do you think our worlds or lives would be much different if we saw in microwaves rather than in visible light?