Q. I read in one of the questions on the website that it is acceptable to begin a sentence with an acronym. If the acronym is not a common one, NASA for example, wouldn’t it be appropriate to instead begin the sentence with the word The and then the acronym? I am having a difficult time with beginning a sentence with acronyms.

A. The use of the definite article with an acronym isn’t determined by the acronym’s position in a sentence but by the acronym’s part of speech. In general, omit the article unless the acronym is used as a singular adjective: 

NASA was in charge of their training. 
Training was held at NASA. 
The NASA facility was impressive. 
They met at the NASA facility.