Aristarchus
There are many reasons to learn how to divide Aristarchus into syllables. Separating a word like Aristarchus into syllables is mainly to make it easier to read and pronounce. The syllable is the smallest sound unit in a word, and the separation of the Aristarchus into syllables allows speakers to better segment and emphasize each sound unit.
Knowing how to separate Aristarchus into syllables can be especially useful for those learning to read and write, because it helps them understand and pronounce Aristarchus more accurately. Furthermore, separating Aristarchus into syllables can also be useful in teaching grammar and spelling, as it allows students to more easily understand and apply the rules of accentuation and syllable division.
In the case of the word Aristarchus, we find that when separating into syllables the resulting number of syllables is 1. With this in mind, it's much easier to learn how to pronounce Aristarchus, as we can focus on perfecting the syllabic pronunciation before trying to pronounce Aristarchus in full or within a sentence. Likewise, this breakdown of Aristarchus into syllables makes it easier for us to remember how to write it.