Thor's Helmet nebula is actually more like an interstellar bubble, blown as a fast wind from the bright, massive star near the bubble's center sweeps through a surrounding molecular cloud. The central star is an extremely hot giant Wolf-Rayet star, though
The Sword Of Orion ~ The Orion constellation is noticeable for three medium-bright stars in a short, straight row. These stars represent Orion’s Belt. If you look closely, you’ll notice a curved line of stars “hanging” from the three Belt stars.