This artist's impression shows Neptune and its small moon Hippocamp. Hippocamp was discovered in images taken with the NASA/ESA Hubble Space Telescope. Image: ESA/Hubble, NASA, L. Calçada
On the origin of Neptune’s smallest moon, Hippocamp - space short science news

The Hubble telescope have shed light on the origin of the smallest moon of Neptune that was first discovered in 2013.

It appears that the small moon, a rock with a diameter of only 34 km and now named "Hippocamp" is a fragment of Proteus, Neptune’s second largest moon that broke off billions of years ago following a comet collision.

The origin of Hippocamp clearly shows that moons can be broken apart by impacting comets.

Read the full story: ESA/Hubble Information Centre
Scientific publication: ESA/Hubble Information Centre