A constellation is a named pattern of stars that looks like a particular shape. Think of it like connecting the dots. If you join the dots – stars, in this case – and use your imagination, the picture would look like an object, animal, or person. For example, the ancient Greeks thought that an arrangement of stars in the sky looked like a giant hunter with a sword attached to his belt, so they named it after a famous hunter in their mythology, Orion. It’s one of the most recognizable constellations in the night sky and can be seen from around the world.

The easiest way to find Orion is to go outside on a clear night and look for three bright stars close together in an almost-straight line. These three stars represent Orion's belt. Two brighter stars to the north mark his shoulders, and two more to the south represent his feet.

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Below the three bright stars of Orion’s belt lies his sword, where you can find the famous Orion Nebula. The nebula is only 1,300 light-years away, making it the closest large star-forming region to Earth. Because of its brightness and prominent location just below Orion’s belt, you can even spot the Orion Nebula from Earth! But with a pair of binoculars, you can get a much more detailed view of the stellar nursery.

https://science.nasa.gov/universe/discovering-the-universe-through-the-constellation-orion/