The astronaut was able to capture the lake reflecting direct sunlight at the camera.

ISS astronaut spies sunglint from Lake Titicaca | Space photo of the day for July 9, 2025

Source: space
Source Link: https://www.space.com/astronomy/earth/iss-astronaut-spies-sunglint-from-lake-titicaca-space-photo-of-the-day-for-july-9-2025