billions and bilions of galaxys are in the universe. the hdf s took ten days to send enough light to get a picture the hdf n took eleven days. light from the deep field takes 2 to 10 billion years to reach us. since the light takes so long to get here, we are seeing the objcts as they were 2 to 10 billion years ago. the hdfs and hdfn pretty much look the same.
astronomers agree that the universe pretty much looks the same in all directions even though they only have images of the north and south. using a computer is the best way to avoid biased selections.
it is very hard to avoid being biased.
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