NASA unveiled a new image of the dwarf planet Ceres that "is like nothing that humanity has ever seen before."
In addition to being a dwarf planet, Ceres is also the largest known asteroid, with a diameter approaching 600 miles.
It also contains the largest mountain on the largest known asteroid in the solar system, Ahuna Mons, which rises more than 13,000 feet.
It's unclear exactly what caused the formation of Ahuna Mons, with its slopes decorated by vertical streaks, but the space agency has a new theory.
"The new hypothesis, based on numerous gravity measurements, holds that a bubble of mud rose from deep within the dwarf planet and pushed through the icy surface at a weak point rich in reflective salt — and then froze," NASA said in a statement.
MYSTERIOUS LARGE MASS DISCOVERED ON MOON BEWILDERS SCIENTISTS: 'WHATEVER IT IS, WHEREVER IT CAME FROM'