The theatrical trick that dazzled them all was iridescence. 'Miss Ellen Terry as Lady Macbeth', wearing a dress of green jewel beetles, by John Singer Sargent.One of Nature’s special effects, it ...

The latter are the only kind of clouds observed at Mars producing iridescence, and they can be seen near the top of the new images at an altitude of around 37 to 50 miles (60 to 80 kilometers).

The latter are the only kind of clouds observed at Mars producing iridescence, and they can be seen near the top of the new images at an altitude of around 37 to 50 miles (60 to 80 kilometers).