Phobos, the larger and inner of the two natural satellites of Mars, is slowly being pulled apart by tidal forces and is expected to break up within the next 50 million years, says a team of planetary researchers led by Dr Terry Hurford of NASA’s Goddard Space Flight Center. The grooves on Phobos, the larger of the two Martian moons, could be produced by tidal forces – the mutual gravitational pull of Mars and the moon. Initially, planetary scientists...
