Write a sentence using the words magnetism, gravitation, and stars.
"Magnetism and gravitation play crucial roles in the life cycles and behavior of stars throughout the universe."
Complete the following task based on the instruction and optional input provided.### Instruction:
Write a sentence using the words magnetism, gravitation, and stars.

### Output:
"Magnetism and gravitation play crucial roles in the life cycles and behavior of stars throughout the universe."