The spelling of the word "Alex Saturn" can be explained using the International Phonetic Alphabet (IPA) phonetic transcription. In IPA, "Alex" is spelled as /ˈælɛks/ while "Saturn" is spelled as /ˈsætɜrn/. The "x" in "Alex" is pronounced as "ks" while the "u" in "Saturn" is pronounced as "ʌ". The consonant cluster "st" in "Saturn" is pronounced as a single sound /st/ without any vowel sound in between. Thus, the spelling of "Alex Saturn" can be accurately represented using IPA phonetic transcription.
"Alex Saturn" does not have a specific etymology as it seems to be a combination of two separate words or names. "Alex" is a given name that is commonly used as a short form for Alexander or Alexandra, and "Saturn" is the name of the sixth planet in our solar system. It is unclear how or why these two words or names would be combined together. The combination of "Alex Saturn" may have been created for various reasons, such as a fictional character, a username, or simply as a unique combination of words.