Geometric albedo node of their orbit, and hence lie on the ecliptic. In practice, measurements at small nonzero phase angles are used to derive the parameters which characterize the directional reflectance properties for the body (Hapke parameters). The reflectance function described by these can then be extrapolated to zero phase angle to obtain an estimate of the geometric albedo. For very bright, solid, airless objects such as Saturn's moons Enceladus and Tethys, whose total reflectance (Bond albedo) is close to one, a strong opposition effect combines with the high Bond albedo to give them a geometric albedo above unity (1.4 in the
Albedo One "The Mammoth Encyclopedia of Science Fiction", notes that "Recent issues have boasted a printed cover, but the magazine still contains a black-and-white photocopied interior" and could "from the purely aesthetic point of view, benefit from some enhanced production values". The entry continues to note that "the editorial and literary quality of the contents more than makes up for this". However, Mann's inclusion of some genre magazines like "Albedo One" as opposed to other available magazines earned some criticism from reviewers, with one reviewer from the online edition of The Zone commenting that "Ireland's "Albedo One" rates a plug... But where