On Mars, a Tiny Moon Makes a Solar Eclipse - Big Brain News
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On Mars, a Tiny Moon Makes a Solar Eclipse

May 25, 2026

Mars can have solar eclipses too. NASA’s Astronomy Picture of the Day showed an eclipse on Mars where Phobos, one of Mars’ moons, passed in front of the Sun as seen from the Martian surface.

Phobos is much smaller than Earth’s Moon and orbits Mars quickly, so the eclipse looks different. Instead of a long cover, it can look like a fast “bite” taken out of the Sun.

We can see this because robots on Mars—like rovers and landers—take pictures and videos. As Phobos moves, it creates a shadow that slides across the rusty-red ground.

That shadow isn’t just cool; it helps scientists measure. By studying the timing and shape of the eclipse, they can learn more about Phobos’s orbit and how Mars and its moons move together like a carefully timed dance.