Albedo used in astronomy are the (V-band) geometric albedo (measuring brightness when illumination comes from directly behind the observer) and the Bond albedo (measuring total proportion of electromagnetic energy reflected). Their values can differ significantly, which is a common source of confusion. In detailed studies, the directional reflectance properties of astronomical bodies are often expressed in terms of the five Hapke parameters which semi-empirically describe the variation of albedo with phase angle, including a characterization of the opposition effect of regolith surfaces. The correlation between astronomical (geometric) albedo, absolute magnitude and diameter is: formula_7, where formula_8 is the astronomical albedo, formula_9
What a Beautiful Name What a Beautiful Name "What a Beautiful Name" is a song by Australian praise and worship group Hillsong Worship. The song, written and led by Brooke Ligertwood and co-written with Ben Fielding, refers to the promise of salvation through Jesus Christ as represented by His Holy Name. The "genre-smashing single" contributed to Hillsong being named "Billboard"s Top Christian Artist of 2017. "What a Beautiful Name" won two Dove Awards for Song of the Year and Worship Song of the Year in 2017. It won the 2018 Grammy Award for Best Contemporary Christian Music Performance/Song. "What a Beautiful Name" was released