polar orbit
Quick Summary
A polar orbit is a trajectory where a satellite circles Earth's poles. As Earth rotates beneath it, this orbit allows the satellite to pass over the entire globe over time, providing comprehensive coverage. This makes polar orbits ideal for satellites that monitor Earth's environment, such as remote sensing and some weather satellites, as well as for military surveillance.1
Satellites in polar orbits are typically launched in a northerly or southerly direction. While this launch direction doesn't benefit from Earth's rotational speed like an easterly launch, the global coverage achieved is a significant advantage.2
Ask Britannica AI about this topic
Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.
weather forecastingMeteorological measurements from satellites and aircraft…two principal types: the low-flying polar orbiter, and the geostationary orbiter.
Read More…two principal types: the low-flying polar orbiter, and the geostationary orbiter.
Read More
space explorationMeteorology…in a north-south direction, called polar orbits, can obtain more detailed data about changing atmospheric conditions. They also provide repetitive global coverage as Earth rotates beneath their orbit. In the United States, military and civilian agencies each have developed independent polar-orbiting meteorological satellite systems; China, Europe, and Russia also have…
Read More…in a north-south direction, called polar orbits, can obtain more detailed data about changing atmospheric conditions. They also provide repetitive global coverage as Earth rotates beneath their orbit. In the United States, military and civilian agencies each have developed independent polar-orbiting meteorological satellite systems; China, Europe, and Russia also have…
Read More