Wavelengths is what allows astronomers redshift a background galaxy that is covered up. This is due to being close to the foreground galaxy.
Yes. Some background galaxies are invisible due to being close to a bright foreground galaxy.
Yes. Some faint background galaxies are masked out due to being close to a bright foreground galaxy.
Often background colours won't be as bright as those in the foreground. They are sometimes fuzzier and more blended and you don't see the difference in cloud as easily.
Florida's license plate has a white background, with a figure of the state in the background in green and a bright orange in the middle foreground. The state's motto, 'The Sunshine State' is written along the bottom of the plate. See the link below for pictures of Florida plates.
Yes, if two stars are along the same line of sight from our perspective, the closer one prevents us from seeing the farther one.
There is a tutorial that shows you how to get a bright white background in a video in the related links of this question.
yeah because your futures bright
Arcturus and all the other bright stars would have been known to the first astronomers, the Babylonians.
comets could be very bright
extra solar planets are not bright compared to the stars they orbit
The contrast between bright clothing and a dark background (apex)
Bright orange background with black border and numbers