FYI, a lot of Hubble images are like that.  Certain colors in the photos of gas clouds and galaxies are mapped to the emissions of various elements like oxygen and helium and such.  They are good approximations but our eyes wouldn’t see that precisely if we were out in space looking.  They don’t see in a lot of those frequencies for one thing, and for another human eyes aren’t that sensitive anyway.  The light from distant galaxies and gas clouds is pretty dim, compared to what our eyes evolved to deal with. If you were in a spaceship cruising between galaxies and could look out a window, you actually wouldn’t see very much. 

If you want to ponder things that are hiding from us, consider there are not only the frequencies we cannot sense, but also that which is below the threshold of perception.  Cats and owls see very well at night because of the reflective coating on their retinas gives their receptor cells a second chance at getting a hit.  I’m told they sacrifice a little detail in the image for that.  They probably see a great deal that we don’t, but they see it less clearly.  For their purposes it’s good enough though I’m sure.

Black and white infrared photography is less misleading in that you know (or should) that it’s only mapping out the infrared part of the spectrum.  Its like bat squeaks pitched downward to where our ears can hear them.  We don’t see in those wavelengths, so we use technology that, in effect, pitches down the light to tell us what is there that our eyes can’t naturally see.  But you have to realize when you are looking at infrared photography that this is what it is.

Human senses aren’t as keen as many of planet earth’s other critters, but we make up for it in our technology.  I’m not sure how anything can hide anywhere in the electro-magnetic spectrum these days.  Physicists and astronomers have gone to great lengths to make the whole thing accessible to human inspection because each part of it tells us something about the nature of our universe.  And especially these days, astronomers are interested in the infrared.  As the universe expands, the most distant objects become more and more red shifted.  Some of the most distant stuff is so completely red shifted now that it is simply not see-able in the visible part of the spectrum anymore.  There is intense interest in infrared part of the spectrum now, because it can tell us so much about the early universe.  The next generation space telescope will work mostly there.

There is a lot that is hiding from us in the ultra and sub sonic sound frequencies.  Just ask dogs, bats and whales.  (grin) But it isn’t so much hiding from us, as talking past us.  You could say most of the universe is talking past us.  But we are learning how to listen.