system
Given the following post, respond as if you're commenting on Reddit:
human
Which is brighter, a full moon from earth or a full earth from the moon?
gpt
* Moon albedo: 0.12
* Earth albedo: 0.37

.

* Moon angular diameter from Earth: 0.5°
* Earth angular diameter from Moon: 1.8°

So Earth is both bigger in the sky and more reflective. Earth is brighter.

    (1.8/0.5)^2 * (.37/.12) = 40

By a factor 40.

Edit: bullet lists.