Visible light makes up only a fraction of the total light, our eyes and internal components have a limited range over which hey can detect light. This is known as the visual spectrum.
However, electronic devices (sensors) exist that can detect ranges of light our eyes cannot.
Yes, there is a part of the electromagnetic spectrum which can be detected by an organism. The part which can be detected depends on the species. Also, not really, if you ask "IS LIGHT INVISIBLE" then it will answer also!! And light is invisible too.
Invisible matter, such as dark matter, does not interact with electromagnetic radiation and therefore cannot be seen or detected with telescopes. However, it is believed to take up space and have gravitational effects on visible matter in the universe.
Radio waves are one example.
The point is that they do not want to be detected, you can always message them and see if they answer.
The magnetic field is the invisible area where the forces of magnetic attraction or repulsion can be detected. This field extends around a magnet and can exert forces on other magnetic objects within its influence.
Light can be invisible if its wavelength falls outside the visible spectrum that the human eye can detect. For example, ultraviolet and infrared light are invisible to the naked eye but can still interact with objects and be detected by specialized equipment.
Most gases are invisible to the naked eye. Gases are made up of molecules that are spread out and don't absorb or reflect light in a way that makes them visible. However, some gases do have odors that can be detected.
Yes, there are colors that are invisible to the human eye, such as ultraviolet and infrared light. These colors are outside the visible spectrum but can be detected with special equipment or technology.
personal space
Plenty of signals have been detected from space - but none have been inferred to have come from an intelligent source. (IE Aliens)
Two invisible radiations from outer space which can affect humans are the infrared rays and the ultra-violet rays.
Infrared and ultraviolet are the invisible colors at the opposite ends of the light spectrum.