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uietness at the Walter Sisulu Botanical Gardens near Johannesburg, South Africa, where the seeds contained in this chapter were recorded and transcribed from tape. A long and relaxed discussion between Ken and David. As the authors cast their eyes to the future, highlighting some of the major questions and problems to hopefully be solved in the future, black eagles, Aquila verreauxii, soared loftily above us in the African skies ... hence the title of our chapter.
Below we present some of the key challenges and enigmas in understanding galaxies, currently facing astronomers today:
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