any ideas on how to incorporate a constellation theme into the unity ceremony?

That's a tough one...all I can come up with is similar to the sand ceremony but instead of using sand maybe you could use star cutouts or star confetti?

It's loosely related, but maybe use sparklers instead of candles?

I would do the sand ceremony in black and navy for the night sky, but add a jar of glitter to each vase of sand for stars. I'd probably use the superfine or "micro" glitter so it mixes thoroughly with the sand but going with oversized glitter/confetti bits could give a more overt star look--just make sure however you do it is something you'll want to look at for a long time since the sand jar is usually a keepsake afterward.

ETA: If you get a jar with flat sides, you could also try some of that etching gunk and etch a constellation onto it. I did a quick google search for star-shaped jars, too, but it looks like they're mostly sized for M&M favors, not sand ceremonies. But if you found a big one, that'd be cool.

I love the glitter idea but the fh just CANNOT lol. his response was something along the lines of NO!!! GLITTER WILL BE EVERYWHERE!!!! hehehe. didn't think of sparklers. that could be really cool!

Oooh. @belle i like the etching idea of the constellation

The thing with glitter IN the sand is that you will mix them outside somewhere well ahead of the ceremony (like, a month before, or now), and the sand/glitter mix will be fully contained thereafter. I totally feel his pain on having loose glitter during your wedding, but if that were really a concern, no one would do the sand ceremony either since sand is also notorious for getting *everywhere*.

What about using a "big" and "little" dipper ladle to pour the sand into the jar?

I know there's a site where you can actually buy a star it will tell you the coordinates of it. Maybe you can get a bottle of champagne and put it a wine box with the coordinate painted or burned on it?? You can open it on your one year anniversary and and spend the night trying to find your star.

@Elphaba just saw this. wooooooooooah. i had no idea you could buy authentic meteor dust. win win win!!!!

ETA: cause i drooled a little on my keyboard at this and am crazy excited!