|The southern constellation of Musca represents a lowly fly. When Johann Bayer added it to his maps he called it "The Bee" and folks liked that name for a couple of hundred years. But then some map maker called it The Fly except there was already a fly up north which was part of Aries the Ram. I'll just let astrologers chew on that fact for a bit. During those days folks called Musca the southern fly to distinguish it from the northern fly but eventually the northern one went away completely and Aries became a no-fly zone.
The Hourglass Nebula is a somewhat famous planetary nebula in Musca. The central region is showing greenish cyanish stuff which means lots of oxygen. The thing about stars of this type is that they have spent a lot of their golden years fabricating Carbon, Nitrogen, and Oxygen. It's called the CNO process for just that reason. Those three elements all give off their own set of colors when they glow but the brightest and most dominate bit of this particular color palette is the green part of the oxygen glow.
Musca is also home to the Dark Doodad Nebula. I don't think the Dark Doodad Nebula needs much in the way of explanation. I mean, it's a doodad, and it's dark. And it's a nebula. Enough said.