"Phobos crosses the Martian sky three times a day, and Earth is visible for months at a stretch, but catching one directly behind the other takes planning and a little luck.

Source: [Space.com](https://www.space.com/space-exploration/mars-rovers/mars-rover-watches-earth-disappear-behind-phobos-space-photo-of-the-day-for-aug-6-2025)

Sponsored