Directions: Select the correct option based on the given description.

An artificial probe moving around the Earth in a path that crosses over both the northern and southern polar regions with an angle of inclination close to 90° is operating in which type of orbit?

The correct option is Polar orbit.

Explanation:

A polar orbit is an orbit in which an artificial probe or satellite passes above or nearly above both the northern and southern polar regions of the Earth during each revolution.

Key features of a polar orbit include:

1. Angle of Inclination: It has an inclination angle of approximately

$90°$

relative to the equatorial plane, allowing the probe's trajectory to align vertically from pole to pole.

2. Global Coverage: As the probe moves along its north-to-south path, the Earth rotates beneath it from east-to-west. Over time, this allows the probe to scan and observe almost the entire surface of the Earth, making polar orbits ideal for Earth observation, weather monitoring, and mapping satellites.

Overview of other options:
• Elliptical orbit: An oval-shaped orbit where the distance between the probe and Earth changes throughout its trajectory.
• Geostationary orbit: A circular orbit directly above the Earth's equator (0° inclination) with an orbital period matching Earth's rotation period, keeping the satellite fixed over a single location.
• Equatorial orbit: An orbit whose plane is aligned closely with the Earth's equatorial plane (inclination close to 0°).