Like our moon, Deimos is tidally locked to Mars, meaning the same side always faces the planet—the only side visible to rovers on the Martian surface. The only way to see Deimos’ far side up close is for a probe like Hera to fly behind it, making such images more of a rarity.

Europe's HERA mission has taken a good look at Mars and its moon Deimos on its way to explore the aftermath of the DART impact in the Didymos–Dimorphos asteroid system.

The European Space Agency launched Hera in 2024 to test asteroid-deflection techniques in deep space. The agency aims to improve planetary defense measures.

On the way to investigate the scene of a historic asteroid collision, a spacecraft swung by Mars and captured rare images of the red planet's small moon Deimos.