What is the angle of the earth with its orbital plane?

The angle of the Earth with its orbital plane, known as the axial tilt or obliquity, is approximately 23.5 degrees. This tilt is responsible for the changing seasons as the Earth orbits the Sun. It causes different parts of the Earth to receive varying amounts of sunlight throughout the year. This axial tilt can vary slightly over long periods due to gravitational interactions with other celestial bodies.