Reflectance values express the percentage of light that is reflected back from a surface, the difference having been absorbed or transmitted by the surface.
Definition of AXIAL. 1. : of, relating to, or having the characteristics of an axis.
Each planets revolve around a different axis of rotation. The axial tilt or obliquity is the angle between the axis of rotation of a planet and perpendicular to its orbital plane. The planets glide majestically on an orbit around the Sun, leaving perceive no trace of the gravitational constraints that lead.his rotation axis is never perpendicular to the orbital plane of the planet, but inclined at an angle varies according to the planets (see picture against). In the case of Earth, this angle was 1 January 2013 to 23 Â° 26'15, 32 .