First, the atmosphere of Mars was destroyed by solar winds, now one of its two moons, is headed for a literal crackup.
Phobos, the nearest of the two moons of Mars, is crisscrossed with groove marks and, unlike other lunar orbs that are pock marked from meteor collisions, scientists say the Martian moon is showing signs of structural decay.
Ultimately, these cracks will cause the destruction of Phobos.
“We think that Phobos has already started to fail, and the first sign of this failure is the production of these grooves,” NASA's Terry Hurford said.
Mars’s gravity is pulling the Phobos 6.6 feet closer every hundred years, and scientists believe this could be the reason the moon could literally fall apart. Phobos is closer to Mars than any other moon is to its planet in the solar system.
But it won’t happen anytime soon. Scientists' best guess is that Phobos won't be pulled apart for another 30 to 50 million years.