What does a sunset on the moon look like ... longer collect light. Blue Ghost—named after a rare firefly species found in the U.S. known for its distinctive blue glow—is slightly different.

A waning crescent ... the moon should still be visible and provided that it is not too hazy, a good telescope should also bring out Spica as a tiny speck against the blue sky.

On Wednesday, Venus will appear close to the waxing crescent moon, which will be 14%-lit, making for a lovely pairing. Bonus: the dark part of the moon will glow with earthshine (aka Da Vinci glow).

Now look below and slightly to the left of Venus and you'll also see the slender sliver of a waxing crescent ... the moon and ...