| Answer | Crossword Clue |
|---|---|
| ALBEDO | Astronomer's light ratio |
| FIXEDSTARS | Apparently stationary light sources, to astronomers |
| ALBEDO | Light reflection ratio |
| ALBEDO | Planetary reflected-light ratio |
| ALBEDO | Planetary light-reflection ratio |
| ALBEDO | Light ratio in astronomy |
| transmittance | The ratio of the light energy falling on a body to that transmitted through it |
| transmittances | The ratio of the light energy falling on a body to that transmitted through it |
| albedos | the ratio of the light reflected by a planet or satellite to that received by it |
| albedo | the ratio of the light reflected by a planet or satellite to that received by it |
