Here's why:
* The Milky Way is our galaxy: It's a massive collection of stars, gas, dust, and planets, including our solar system.
* Constellations are groupings of stars: They are patterns we see from Earth, but the stars themselves are spread across the galaxy.
* Orion's stars are part of the Milky Way: The stars in Orion are relatively close to our solar system and lie within the spiral arm of the Milky Way where we reside.
So, while we see Orion as a distinct shape in the night sky, its stars are actually members of the Milky Way galaxy, just like our own sun.