astronomical units (AU) isn't in the selection menu?
It's there, though. At the 'scientific' section, they just didn't capitalise it and it's 'au'.
anything practical you mentioned
Absolutely true, but if goobster could brush me off on pointing out that teleporting ~10^29 particles composing the human body would be beyond stupidly difficult and doesn't-work-like-star-trek (source), I assumed that anything optimistically achievable within 100 or so years is fair game. :P