The $23.5^\circ$ tilt is defined as the angle between the Earth's equator and which specific orbital plane?

Answer

The ecliptic plane

The axial tilt measurement is defined as the angle between the plane of the Earth's equator and the ecliptic plane, which is the plane defined by the Earth's path around the Sun.

The $23.5^\circ$ tilt is defined as the angle between the Earth's equator and which specific orbital plane?

#Videos

The Earths Tilt - YouTube

Earthplanetrotationtiltaxis