Work at the National Aeronautics and Space Administration or work at NASA. Refer to wikipedia if you are in doubt.
Notice a pattern?
Of the list you gave MIT and NASA are both analogous to SIAI. CNN is an entirely different kind of acronym and Pepsi isn’t an acronym at all so doesn’t even get allcaps when written in a sentence. Follow the example of the MIT and NASA, both of which use ‘the’ before the full name but not before the acronym. Because not doing so looks ridiculous.
Well marketed concerns all drop “the” in their product or company name. Marketing science has demonstrated again and again that shorter names are more memorable and strictly better. Since English is not airtight on this matter, I say Science > English.
Muddled thinking based on poorly understood science < English < Science.
Work at the National Aeronautics and Space Administration or work at NASA. Refer to wikipedia if you are in doubt.
Of the list you gave MIT and NASA are both analogous to SIAI. CNN is an entirely different kind of acronym and Pepsi isn’t an acronym at all so doesn’t even get allcaps when written in a sentence. Follow the example of the MIT and NASA, both of which use ‘the’ before the full name but not before the acronym. Because not doing so looks ridiculous.
Muddled thinking based on poorly understood science < English < Science.