really pedantic note: it's "zero-g" (as in g-forces, the force you feel from acceleration) and not "zero-gravity"

It's a term that many would say is intentionally general.

Some use it as shorthand for "LGBT+" without being as cumbersome as an actonym.

Others use it to label themselves because they're unsure of where they fit but they know (or are at least pretty sure) they're not cisgender and/or not heterosexual.

Still others use it as s descriptor for either themselves or other people on the LGBT+ spectrum who don't fit neatly into the common categories.

Important addendum: it's not common nowadays, but "queer" was and is used in some circles as a slur. There's been an active effort to reclaim it, and it might feel a bit old-timey to hear it used with malice, but there's a reasonable minority of LGBT+ people who aren't a fan of being called "queer". There's nothing wrong with using it or with not liking it either, it's just something to keep in mind.

Although we use base 10 for most counting today, it's worth noting that base 12 shows up in a lot of ways too. It's arguably more optimal, since it allows you to divide cleanly by multiples of 2, 3, and 4, rather than just 2 and 5.

Early numbering systems used base 12, which is why you'll see things like time (60 seconds, 24 hours) or angles (360 degrees) use multiples of it, because easy divisibility is useful for those things.