There is a big halo around the moon, right now. It’s about 16 times the radius of the moon in size. It’s absolutely stunning. I’ve just stared at it for ten minutes or so. Bright moon, dark, dark disk, perfect luminous halo, radiating mostly away from the moon. Totally wonderfully fabulous.
No way I can take a picture that’ll do it justice with the equipment I have on hand, alas. Here’s a wiki commons pic that’s close:
A celestial sphere beauty.