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A satellite is best defined as

Rationale

An object that orbits another object.

A satellite is defined as any object that revolves around another object in space due to gravitational forces. This definition encompasses both natural satellites, like moons, and artificial satellites created by humans to perform various functions such as communication, navigation, and scientific observation.

A (a ball of ice that meanders through space) YOUR ANSWER

While a ball of ice could refer to a comet or a similar object, this description does not accurately characterize a satellite. Satellites are specifically defined by their orbital relationship with another object, rather than merely moving through space without a defined orbital path.

B (a probe that passes through the solar system) YOUR ANSWER

This statement describes a type of space exploration vehicle, but it does not fit the definition of a satellite. Probes are typically designed to travel to various destinations within the solar system and do not maintain an orbit around another object, which is a key characteristic of satellites.

D (a human-made object that lands on the Moon) YOUR ANSWER

Although human-made lunar landers are significant in space exploration, they are not classified as satellites. Landers are designed to reach the surface of celestial bodies rather than orbit them. The defining feature of a satellite is its continuous orbit around another object, which this choice does not reflect.

Conclusion

Satellites are defined as objects that orbit other celestial bodies, a characteristic that is true for both natural and artificial examples. The other choices provided describe various space phenomena or vehicles but fail to encapsulate the essential orbital aspect that characterizes what a satellite truly is. Understanding this distinction is crucial for grasping the basic concepts of orbital mechanics and space exploration.

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