The constellation of Orion is rich with impressive nebulas. Of the many interesting details that particularly draws the eye is Barnard’s Loop, the bright red circular filament arcing down from the middle. The bright orange star on the upper left is Betelgeuse, while the bright blue star on the lower right is Rigel. Other famous nebulas visible include the Witch Head Nebula, the Flame Nebula, and the comparatively small Horsehead Nebula. NASA-APOD, Stanislav Volskiy.
We are surrounded by stars. Because Earth orbits in a flat plane around the sun, we see the sun against the same stars again and again throughout the year. Those constellations, which have been special to people throughout the ages, are the constellations of the Zodiac. Image via Professor Marcia Rieke.
Queen Cassiopeia boasted that she and her daughter Andromeda were even prettier than the sea nymphs. Furious Poseidon sent the monster Cetus to destroy their kingdom. An oracle told them the only way to save the kingdom was to sacrifice Andromeda. So she was chained to the rocks to await Cetus. Perseus riding on Pegasus, turned Cetus into stone using a medusa head and freed Andromeda. Poseidon, still mad at Cassiopeia, threw her into the sky, where she spends half her time sitting upside down.