The moon is full. Its features are recognisable but impossibly squashed.
Earth's atmosphere acts as a giant
lens causing the sun and moon close
to the horizon to appear higher than their actual position. The refraction
strengthens closer to the horizon and thus the lower limb is raised more
than the upper one making the disk appear flattened.
The flattening is usually up to about 20% and the secret
of this image is that it is a moonset seen from the International
Space Station. The Moon's rays
were refracted on entry into Earth's atmosphere and then again as they
traveled out to the ISS. The flattening was therefore doubled.