Light and Filters: Light from astronomical objects comes in a wide range of colors, each corresponding to a particular kind of electromagnetic wave. Hubble can detect all the visible wavelengths of light plus many more that are invisible to human eyes, such as ultraviolet and infrared light. Astronomical objects often look different in these different wavelengths of light. To record what an object looks like at a certain wavelength, Hubble uses special filters that allow only a certain range of light wavelengths through. Once the unwanted light has been filtered out, the remaining light is recorded.
Enhanced Color: Enhancing the visible colors in an image often brings out an object’s subtle structural detail.
Natural/True Color: The colors in this image of a galaxy were chosen to simulate the colors that our eyes might see if we were able to visit it in a space
Representative Color: Representative color helps scientists visualize what would otherwise be invisible, such as the appearance of an object in infrared light.