Which term describes the curved path of a celestial object around a star, planet, or moon, often involving a periodic orbit?

Which term describes the curved path of a celestial object around a star, planet, or moon, often involving a periodic orbit?

• A. Orbit
• B. Cycle
• C. Phase
• D. Rotation

Answer: (A)

The curved path a celestial object follows as it moves under gravity around a star, planet, or moon is called an orbit. This path can be circular or elliptical, and when the motion repeats after a period, it’s a periodic orbit. Gravity keeps the object bound to the larger body, shaping the trajectory and governing the time it takes to complete each loop. Cycle refers to a repeating sequence of events, not the actual path taken through space. Phase is a specific point or stage within a cycle or orbit, such as a particular position in the Moon’s cycle. Rotation is the spinning of a body around its own axis, not its path around another body. So, the term that best describes the curved, repeating path around another body is orbit.

The curved path a celestial object follows as it moves under gravity around a star, planet, or moon is called an orbit. This path can be circular or elliptical, and when the motion repeats after a period, it’s a periodic orbit. Gravity keeps the object bound to the larger body, shaping the trajectory and governing the time it takes to complete each loop.

Cycle refers to a repeating sequence of events, not the actual path taken through space. Phase is a specific point or stage within a cycle or orbit, such as a particular position in the Moon’s cycle. Rotation is the spinning of a body around its own axis, not its path around another body.

So, the term that best describes the curved, repeating path around another body is orbit.