Neptune’s smallest moon may be a chip off another moon
The tiny object has been given the official name Hippocamp
![Neptune, Proteus and Hippocamp](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2019/02/022019_lg_neptunemoon_feat_rev.jpg?fit=860%2C460&ssl=1)
CHIP OFF THE OLD BLOCK A massive collision that left Neptune’s second largest moon, Proteus (as seen in the background of this illustration) with a huge crater may have spawned its smallest moon, Hippocamp (foreground).
NASA, ESA, and J. Olmsted/STScI