A defining characteristic of Mars is it red color, but that may not be its only claim to fame in the future. Scientists believe the planet will feature rings—a feature the Martian planet may have had over 4 billion years ago.

Apparently, an asteroid or other body slammed into the Red Planet around 4.3 billion years ago, sending debris into space. The debris then formed a planetary ring, which then clumped together to form a moon.

Scientists believe once the ring formed, debris slowly began collecting into a moon, and once the Roche limit was reached, broke apart once again. It’s thought Mars’ moon, Phobos, will break apart once it reaches the Roche limit, “and become a set of rings in roughly 70 million years,” NASA said.