Any star around which planets revolve.

Any star around which planets revolve.

• A. Star
• B. Moon
• C. Sun
• D. Galaxy

Answer: (C)

Planets orbit a central star because gravity pulls them toward the star’s center, guiding their motion into orbits rather than straight lines. In our solar system, the star at the center is the Sun, which is the specific star the planets revolve around. A Moon is a natural satellite of a planet, not the central object for a whole planetary system. A galaxy is a vast collection of stars and other matter, not a single star that planets orbit. The word star is generic, but the context here is our own solar system, so the Sun is the correct central star.

Planets orbit a central star because gravity pulls them toward the star’s center, guiding their motion into orbits rather than straight lines. In our solar system, the star at the center is the Sun, which is the specific star the planets revolve around. A Moon is a natural satellite of a planet, not the central object for a whole planetary system. A galaxy is a vast collection of stars and other matter, not a single star that planets orbit. The word star is generic, but the context here is our own solar system, so the Sun is the correct central star.