The Ecliptic is the plane of Earth's orbit.

The 'ecliptic' plane is the plane that contains

the Sun and the Earth's orbit around it.

The ecliptic. Because it is the plane that contains the earth as it orbits the sun, by definition it is also the plane that contains the sun as we observe it in its yearly journey through the stars.

The plane of Pluto's orbit is inclined 17.2° to the plane of the ecliptic.

That plane is called the Ecliptic.

That plane is called the Ecliptic.

That plane is called the Ecliptic.

That plane is called the Ecliptic.