Ellipses are space, period, space, period, space, period, space . . .

No, it is no longer necessary to put two spaces after a comma used as punctuation. The modern convention is to use only one space after a comma.

You only need one space after a comma.

A colon typically comes before a list or explanation. It is placed at the end of the sentence, followed by a single space and then the first item or explanation.

Typically, one space is used after a punctuation mark in most writing styles. However, some modern style guides suggest using only one space after a punctuation mark, especially with the prevalence of digital writing and typesetting. It is essential to be consistent with spacing throughout a document or text.