S Persei facts for kids

S Persei is a huge, bright star known as a red supergiant. It's located near a famous group of stars called the Double Cluster in the Perseus constellation. You can find it just north of the star cluster NGC 869.

What is S Persei?

S Persei is one of the largest and brightest stars we know. It's so big that if it were in our solar system, it would stretch out past the orbit of Mars, or even Jupiter! Imagine a star that could swallow up many planets.

A Variable Star

S Persei is a special type of star called a semiregular variable star. This means its brightness changes over time, but not always in a perfectly predictable way. It gets brighter and dimmer, like a cosmic light bulb flickering. Scientists study these changes to learn more about how giant stars work.

Where is it Located?

S Persei is found in the constellation Perseus. This constellation is named after a hero from Greek myths. It's easy to spot near the Double Cluster, which is a beautiful pair of star clusters that look like a fuzzy patch in the night sky.

Images for kids

• 

  This graph shows how S Persei's brightness changes over time.

See also

In Spanish: S Persei para niños