They have dozens filters on the telescope so they take multiple pictures at different wavelength and assign colors to them and combine them.
The galaxies from the early universe would not be visible in the visible spectrum since due to red shift, its become infrared spectrum. Also infrared spectrum can see through stellar dust so some things become more transparent in the photos.
The galaxies from the early universe would not be visible in the visible spectrum since due to red shift, its become infrared spectrum. Also infrared spectrum can see through stellar dust so some things become more transparent in the photos.